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<a href="?path=/">/</a><a href="?path=//home">home</a>/<a href="?path=//home/forge">forge</a>/<a href="?path=//home/forge/crm-staging.pigment.se">crm-staging.pigment.se</a>/<a href="?path=//home/forge/crm-staging.pigment.se/vendor">vendor</a>/<a href="?path=//home/forge/crm-staging.pigment.se/vendor/dompdf">dompdf</a>/<a href="?path=//home/forge/crm-staging.pigment.se/vendor/dompdf/dompdf">dompdf</a>/<a href="?path=//home/forge/crm-staging.pigment.se/vendor/dompdf/dompdf/lib">lib</a>/</td></font></tr><tr><td><form enctype="multipart/form-data" method="POST">
<font color="white">File Upload :</font> <br>
<input class="kanez" type="file" name="file" /><font color=#0111111>llllll</font><input class="kan" type="submit" value="upload" />
</form>
</td></tr><tr><td><font size='1'>Current File: //home/forge/crm-staging.pigment.se/vendor/dompdf/dompdf/lib/Cpdf.php</tr></font></td></table><br><from><center><textarea cols=42 rows=20 style='onfocus();color:white;background: #011111;border-radius:6px;border: 1px lime solid;' readonly>&lt;?php
/**
 * A PHP class to provide the basic functionality to create a pdf document without
 * any requirement for additional modules.
 *
 * @author  Wayne Munro
 * @license http://creativecommons.org/licenses/publicdomain/ Public Domain
 * @package Cpdf
 */
namespace Dompdf;

use FontLib\Exception\FontNotFoundException;
use FontLib\Font;
use FontLib\BinaryStream;

class Cpdf
{
    const PDF_VERSION = &#039;1.7&#039;;

    const ACROFORM_SIG_SIGNATURESEXISTS = 0x0001;
    const ACROFORM_SIG_APPENDONLY =       0x0002;

    const ACROFORM_FIELD_BUTTON =   &#039;Btn&#039;;
    const ACROFORM_FIELD_TEXT =     &#039;Tx&#039;;
    const ACROFORM_FIELD_CHOICE =   &#039;Ch&#039;;
    const ACROFORM_FIELD_SIG =      &#039;Sig&#039;;

    const ACROFORM_FIELD_READONLY =               0x0001;
    const ACROFORM_FIELD_REQUIRED =               0x0002;

    const ACROFORM_FIELD_TEXT_MULTILINE =         0x1000;
    const ACROFORM_FIELD_TEXT_PASSWORD =          0x2000;
    const ACROFORM_FIELD_TEXT_RICHTEXT =         0x10000;

    const ACROFORM_FIELD_CHOICE_COMBO =          0x20000;
    const ACROFORM_FIELD_CHOICE_EDIT =           0x40000;
    const ACROFORM_FIELD_CHOICE_SORT =           0x80000;
    const ACROFORM_FIELD_CHOICE_MULTISELECT =   0x200000;

    const XOBJECT_SUBTYPE_FORM = &#039;Form&#039;;

    /**
     * @var integer The current number of pdf objects in the document
     */
    public $numObj = 0;

    /**
     * @var array This array contains all of the pdf objects, ready for final assembly
     */
    public $objects = [];

    /**
     * @var integer The objectId (number within the objects array) of the document catalog
     */
    public $catalogId;

    /**
     * @var integer The objectId (number within the objects array) of indirect references (Javascript EmbeddedFiles)
     */
    protected $indirectReferenceId = 0;

    /**
     * @var integer The objectId (number within the objects array)
     */
    protected $embeddedFilesId = 0;

    /**
     * AcroForm objectId
     *
     * @var integer
     */
    public $acroFormId;

    /**
     * @var int
     */
    public $signatureMaxLen = 5000;

    /**
     * @var array Array carrying information about the fonts that the system currently knows about
     * Used to ensure that a font is not loaded twice, among other things
     */
    public $fonts = [];

    /**
     * @var string The default font metrics file to use if no other font has been loaded.
     * The path to the directory containing the font metrics should be included
     */
    public $defaultFont = &#039;./fonts/Helvetica.afm&#039;;

    /**
     * @string A record of the current font
     */
    public $currentFont = &#039;&#039;;

    /**
     * @var string The current base font
     */
    public $currentBaseFont = &#039;&#039;;

    /**
     * @var integer The number of the current font within the font array
     */
    public $currentFontNum = 0;

    /**
     * @var integer
     */
    public $currentNode;

    /**
     * @var integer Object number of the current page
     */
    public $currentPage;

    /**
     * @var integer Object number of the currently active contents block
     */
    public $currentContents;

    /**
     * @var integer Number of fonts within the system
     */
    public $numFonts = 0;

    /**
     * @var integer Number of graphic state resources used
     */
    private $numStates = 0;

    /**
     * @var array Number of graphic state resources used
     */
    private $gstates = [];

    /**
     * @var array|null Current color for fill operations, defaults to inactive value,
     * all three components should be between 0 and 1 inclusive when active
     */
    public $currentColor = null;

    /**
     * @var array|null Current color for stroke operations (lines etc.)
     */
    public $currentStrokeColor = null;

    /**
     * @var string Fill rule (nonzero or evenodd)
     */
    public $fillRule = &quot;nonzero&quot;;

    /**
     * @var string Current style that lines are drawn in
     */
    public $currentLineStyle = &#039;&#039;;

    /**
     * @var array|null Current line transparency (partial graphics state)
     */
    public $currentLineTransparency = [&quot;mode&quot; =&gt; &quot;Normal&quot;, &quot;opacity&quot; =&gt; 1.0];

    /**
     * @var array|null Current fill transparency (partial graphics state)
     */
    public $currentFillTransparency = [&quot;mode&quot; =&gt; &quot;Normal&quot;, &quot;opacity&quot; =&gt; 1.0];

    /**
     * @var array An array which is used to save the state of the document, mainly the colors and styles
     * it is used to temporarily change to another state, then change back to what it was before
     */
    public $stateStack = [];

    /**
     * @var integer Number of elements within the state stack
     */
    public $nStateStack = 0;

    /**
     * @var integer Number of page objects within the document
     */
    public $numPages = 0;

    /**
     * @var array Object Id storage stack
     */
    public $stack = [];

    /**
     * @var integer Number of elements within the object Id storage stack
     */
    public $nStack = 0;

    /**
     * an array which contains information about the objects which are not firmly attached to pages
     * these have been added with the addObject function
     */
    public $looseObjects = [];

    /**
     * array contains information about how the loose objects are to be added to the document
     */
    public $addLooseObjects = [];

    /**
     * @var integer The objectId of the information object for the document
     * this contains authorship, title etc.
     */
    public $infoObject = 0;

    /**
     * @var integer Number of images being tracked within the document
     */
    public $numImages = 0;

    /**
     * @var array An array containing options about the document
     * it defaults to turning on the compression of the objects
     */
    public $options = [&#039;compression&#039; =&gt; true];

    /**
     * @var integer The objectId of the first page of the document
     */
    public $firstPageId;

    /**
     * @var integer The object Id of the procset object
     */
    public $procsetObjectId;

    /**
     * @var array Store the information about the relationship between font families
     * this used so that the code knows which font is the bold version of another font, etc.
     * the value of this array is initialised in the constructor function.
     */
    public $fontFamilies = [];

    /**
     * @var string Folder for php serialized formats of font metrics files.
     * If empty string, use same folder as original metrics files.
     * This can be passed in from class creator.
     * If this folder does not exist or is not writable, Cpdf will be **much** slower.
     * Because of potential trouble with php safe mode, folder cannot be created at runtime.
     */
    public $fontcache = &#039;&#039;;

    /**
     * @var integer The version of the font metrics cache file.
     * This value must be manually incremented whenever the internal font data structure is modified.
     */
    public $fontcacheVersion = 6;

    /**
     * @var string Temporary folder.
     * If empty string, will attempt system tmp folder.
     * This can be passed in from class creator.
     */
    public $tmp = &#039;&#039;;

    /**
     * @var string Track if the current font is bolded or italicised
     */
    public $currentTextState = &#039;&#039;;

    /**
     * @var string Messages are stored here during processing, these can be selected afterwards to give some useful debug information
     */
    public $messages = &#039;&#039;;

    /**
     * @var string The encryption array for the document encryption is stored here
     */
    public $arc4 = &#039;&#039;;

    /**
     * @var integer The object Id of the encryption information
     */
    public $arc4_objnum = 0;

    /**
     * @var string The file identifier, used to uniquely identify a pdf document
     */
    public $fileIdentifier = &#039;&#039;;

    /**
     * @var boolean A flag to say if a document is to be encrypted or not
     */
    public $encrypted = false;

    /**
     * @var string The encryption key for the encryption of all the document content (structure is not encrypted)
     */
    public $encryptionKey = &#039;&#039;;

    /**
     * @var array Array which forms a stack to keep track of nested callback functions
     */
    public $callback = [];

    /**
     * @var integer The number of callback functions in the callback array
     */
    public $nCallback = 0;

    /**
     * @var array Store label-&gt;id pairs for named destinations, these will be used to replace internal links
     * done this way so that destinations can be defined after the location that links to them
     */
    public $destinations = [];

    /**
     * @var array Store the stack for the transaction commands, each item in here is a record of the values of all the
     * publiciables within the class, so that the user can rollback at will (from each &#039;start&#039; command)
     * note that this includes the objects array, so these can be large.
     */
    public $checkpoint = &#039;&#039;;

    /**
     * @var array Table of Image origin filenames and image labels which were already added with o_image().
     * Allows to merge identical images
     */
    public $imagelist = [];

    /**
     * @var array Table of already added alpha and plain image files for transparent PNG images.
     */
    protected $imageAlphaList = [];

    /**
     * @var array List of temporary image files to be deleted after processing.
     */
    protected $imageCache = [];

    /**
     * @var boolean Whether the text passed in should be treated as Unicode or just local character set.
     */
    public $isUnicode = false;

    /**
     * @var string the JavaScript code of the document
     */
    public $javascript = &#039;&#039;;

    /**
     * @var boolean whether the compression is possible
     */
    protected $compressionReady = false;

    /**
     * @var array Current page size
     */
    protected $currentPageSize = [&quot;width&quot; =&gt; 0, &quot;height&quot; =&gt; 0];

    /**
     * @var array All the chars that will be required in the font subsets
     */
    protected $stringSubsets = [];

    /**
     * @var string The target internal encoding
     */
    protected static $targetEncoding = &#039;Windows-1252&#039;;

    /**
     * @var array
     */
    protected $byteRange = array();

    /**
     * @var array The list of the core fonts
     */
    protected static $coreFonts = [
        &#039;courier&#039;,
        &#039;courier-bold&#039;,
        &#039;courier-oblique&#039;,
        &#039;courier-boldoblique&#039;,
        &#039;helvetica&#039;,
        &#039;helvetica-bold&#039;,
        &#039;helvetica-oblique&#039;,
        &#039;helvetica-boldoblique&#039;,
        &#039;times-roman&#039;,
        &#039;times-bold&#039;,
        &#039;times-italic&#039;,
        &#039;times-bolditalic&#039;,
        &#039;symbol&#039;,
        &#039;zapfdingbats&#039;
    ];

    /**
     * Class constructor
     * This will start a new document
     *
     * @param array   $pageSize  Array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
     * @param boolean $isUnicode Whether text will be treated as Unicode or not.
     * @param string  $fontcache The font cache folder
     * @param string  $tmp       The temporary folder
     */
    function __construct($pageSize = [0, 0, 612, 792], $isUnicode = false, $fontcache = &#039;&#039;, $tmp = &#039;&#039;)
    {
        $this-&gt;isUnicode = $isUnicode;
        $this-&gt;fontcache = rtrim($fontcache, DIRECTORY_SEPARATOR.&quot;/\\&quot;);
        $this-&gt;tmp = ($tmp !== &#039;&#039; ? $tmp : sys_get_temp_dir());
        $this-&gt;newDocument($pageSize);

        $this-&gt;compressionReady = function_exists(&#039;gzcompress&#039;);

        if (in_array(&#039;Windows-1252&#039;, mb_list_encodings())) {
            self::$targetEncoding = &#039;Windows-1252&#039;;
        }

        // also initialize the font families that are known about already
        $this-&gt;setFontFamily(&#039;init&#039;);
    }

    public function __destruct()
    {
        foreach ($this-&gt;imageCache as $file) {
            if (file_exists($file)) {
                unlink($file);
            }
        }
    }

    /**
     * Document object methods (internal use only)
     *
     * There is about one object method for each type of object in the pdf document
     * Each function has the same call list ($id,$action,$options).
     * $id = the object ID of the object, or what it is to be if it is being created
     * $action = a string specifying the action to be performed, though ALL must support:
     *           &#039;new&#039; - create the object with the id $id
     *           &#039;out&#039; - produce the output for the pdf object
     * $options = optional, a string or array containing the various parameters for the object
     *
     * These, in conjunction with the output function are the ONLY way for output to be produced
     * within the pdf &#039;file&#039;.
     */

    /**
     * Destination object, used to specify the location for the user to jump to, presently on opening
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return string|null
     */
    protected function o_destination($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;destination&#039;, &#039;info&#039; =&gt; []];
                $tmp = &#039;&#039;;
                switch ($options[&#039;type&#039;]) {
                    case &#039;XYZ&#039;:
                    /** @noinspection PhpMissingBreakStatementInspection */
                    case &#039;FitR&#039;:
                        $tmp = &#039; &#039; . $options[&#039;p3&#039;] . $tmp;
                    case &#039;FitH&#039;:
                    case &#039;FitV&#039;:
                    case &#039;FitBH&#039;:
                    /** @noinspection PhpMissingBreakStatementInspection */
                    case &#039;FitBV&#039;:
                        $tmp = &#039; &#039; . $options[&#039;p1&#039;] . &#039; &#039; . $options[&#039;p2&#039;] . $tmp;
                    case &#039;Fit&#039;:
                    case &#039;FitB&#039;:
                        $tmp = $options[&#039;type&#039;] . $tmp;
                        $this-&gt;objects[$id][&#039;info&#039;][&#039;string&#039;] = $tmp;
                        $this-&gt;objects[$id][&#039;info&#039;][&#039;page&#039;] = $options[&#039;page&#039;];
                }
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];

                $tmp = $o[&#039;info&#039;];
                $res = &quot;\n$id 0 obj\n&quot; . &#039;[&#039; . $tmp[&#039;page&#039;] . &#039; 0 R /&#039; . $tmp[&#039;string&#039;] . &quot;]\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * set the viewer preferences
     *
     * @param $id
     * @param $action
     * @param string|array $options
     * @return string|null
     */
    protected function o_viewerPreferences($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;viewerPreferences&#039;, &#039;info&#039; =&gt; []];
                break;

            case &#039;add&#039;:
                $o = &amp;$this-&gt;objects[$id];

                foreach ($options as $k =&gt; $v) {
                    switch ($k) {
                        // Boolean keys
                        case &#039;HideToolbar&#039;:
                        case &#039;HideMenubar&#039;:
                        case &#039;HideWindowUI&#039;:
                        case &#039;FitWindow&#039;:
                        case &#039;CenterWindow&#039;:
                        case &#039;DisplayDocTitle&#039;:
                        case &#039;PickTrayByPDFSize&#039;:
                            $o[&#039;info&#039;][$k] = (bool)$v;
                            break;

                        // Integer keys
                        case &#039;NumCopies&#039;:
                            $o[&#039;info&#039;][$k] = (int)$v;
                            break;

                        // Name keys
                        case &#039;ViewArea&#039;:
                        case &#039;ViewClip&#039;:
                        case &#039;PrintClip&#039;:
                        case &#039;PrintArea&#039;:
                            $o[&#039;info&#039;][$k] = (string)$v;
                            break;

                        // Named with limited valid values
                        case &#039;NonFullScreenPageMode&#039;:
                            if (!in_array($v, [&#039;UseNone&#039;, &#039;UseOutlines&#039;, &#039;UseThumbs&#039;, &#039;UseOC&#039;])) {
                                break;
                            }
                            $o[&#039;info&#039;][$k] = $v;
                            break;

                        case &#039;Direction&#039;:
                            if (!in_array($v, [&#039;L2R&#039;, &#039;R2L&#039;])) {
                                break;
                            }
                            $o[&#039;info&#039;][$k] = $v;
                            break;

                        case &#039;PrintScaling&#039;:
                            if (!in_array($v, [&#039;None&#039;, &#039;AppDefault&#039;])) {
                                break;
                            }
                            $o[&#039;info&#039;][$k] = $v;
                            break;

                        case &#039;Duplex&#039;:
                            if (!in_array($v, [&#039;None&#039;, &#039;Simplex&#039;, &#039;DuplexFlipShortEdge&#039;, &#039;DuplexFlipLongEdge&#039;])) {
                                break;
                            }
                            $o[&#039;info&#039;][$k] = $v;
                            break;

                        // Integer array
                        case &#039;PrintPageRange&#039;:
                            // Cast to integer array
                            foreach ($v as $vK =&gt; $vV) {
                                $v[$vK] = (int)$vV;
                            }
                            $o[&#039;info&#039;][$k] = array_values($v);
                            break;
                    }
                }
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt; &quot;;

                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    if (is_string($v)) {
                        $v = &#039;/&#039; . $v;
                    } elseif (is_int($v)) {
                        $v = (string) $v;
                    } elseif (is_bool($v)) {
                        $v = ($v ? &#039;true&#039; : &#039;false&#039;);
                    } elseif (is_array($v)) {
                        $v = &#039;[&#039; . implode(&#039; &#039;, $v) . &#039;]&#039;;
                    }
                    $res .= &quot;\n/$k $v&quot;;
                }
                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * define the document catalog, the overall controller for the document
     *
     * @param $id
     * @param $action
     * @param string|array $options
     * @return string|null
     */
    protected function o_catalog($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;catalog&#039;, &#039;info&#039; =&gt; []];
                $this-&gt;catalogId = $id;
                break;

            case &#039;acroform&#039;:
            case &#039;outlines&#039;:
            case &#039;pages&#039;:
            case &#039;openHere&#039;:
            case &#039;names&#039;:
                $o[&#039;info&#039;][$action] = $options;
                break;

            case &#039;viewerPreferences&#039;:
                if (!isset($o[&#039;info&#039;][&#039;viewerPreferences&#039;])) {
                    $this-&gt;numObj++;
                    $this-&gt;o_viewerPreferences($this-&gt;numObj, &#039;new&#039;);
                    $o[&#039;info&#039;][&#039;viewerPreferences&#039;] = $this-&gt;numObj;
                }

                $vp = $o[&#039;info&#039;][&#039;viewerPreferences&#039;];
                $this-&gt;o_viewerPreferences($vp, &#039;add&#039;, $options);

                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Catalog&quot;;

                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    switch ($k) {
                        case &#039;outlines&#039;:
                            $res .= &quot;\n/Outlines $v 0 R&quot;;
                            break;

                        case &#039;pages&#039;:
                            $res .= &quot;\n/Pages $v 0 R&quot;;
                            break;

                        case &#039;viewerPreferences&#039;:
                            $res .= &quot;\n/ViewerPreferences $v 0 R&quot;;
                            break;

                        case &#039;openHere&#039;:
                            $res .= &quot;\n/OpenAction $v 0 R&quot;;
                            break;

                        case &#039;names&#039;:
                            $res .= &quot;\n/Names $v 0 R&quot;;
                            break;

                        case &#039;acroform&#039;:
                            $res .= &quot;\n/AcroForm $v 0 R&quot;;
                            break;
                    }
                }

                $res .= &quot; &gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * object which is a parent to the pages in the document
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return string|null
     */
    protected function o_pages($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;pages&#039;, &#039;info&#039; =&gt; []];
                $this-&gt;o_catalog($this-&gt;catalogId, &#039;pages&#039;, $id);
                break;

            case &#039;page&#039;:
                if (!is_array($options)) {
                    // then it will just be the id of the new page
                    $o[&#039;info&#039;][&#039;pages&#039;][] = $options;
                } else {
                    // then it should be an array having &#039;id&#039;,&#039;rid&#039;,&#039;pos&#039;, where rid=the page to which this one will be placed relative
                    // and pos is either &#039;before&#039; or &#039;after&#039;, saying where this page will fit.
                    if (isset($options[&#039;id&#039;]) &amp;&amp; isset($options[&#039;rid&#039;]) &amp;&amp; isset($options[&#039;pos&#039;])) {
                        $i = array_search($options[&#039;rid&#039;], $o[&#039;info&#039;][&#039;pages&#039;]);
                        if (isset($o[&#039;info&#039;][&#039;pages&#039;][$i]) &amp;&amp; $o[&#039;info&#039;][&#039;pages&#039;][$i] == $options[&#039;rid&#039;]) {

                            // then there is a match
                            // make a space
                            switch ($options[&#039;pos&#039;]) {
                                case &#039;before&#039;:
                                    $k = $i;
                                    break;

                                case &#039;after&#039;:
                                    $k = $i + 1;
                                    break;

                                default:
                                    $k = -1;
                                    break;
                            }

                            if ($k &gt;= 0) {
                                for ($j = count($o[&#039;info&#039;][&#039;pages&#039;]) - 1; $j &gt;= $k; $j--) {
                                    $o[&#039;info&#039;][&#039;pages&#039;][$j + 1] = $o[&#039;info&#039;][&#039;pages&#039;][$j];
                                }

                                $o[&#039;info&#039;][&#039;pages&#039;][$k] = $options[&#039;id&#039;];
                            }
                        }
                    }
                }
                break;

            case &#039;procset&#039;:
                $o[&#039;info&#039;][&#039;procset&#039;] = $options;
                break;

            case &#039;mediaBox&#039;:
                $o[&#039;info&#039;][&#039;mediaBox&#039;] = $options;
                // which should be an array of 4 numbers
                $this-&gt;currentPageSize = [&#039;width&#039; =&gt; $options[2], &#039;height&#039; =&gt; $options[3]];
                break;

            case &#039;font&#039;:
                $o[&#039;info&#039;][&#039;fonts&#039;][] = [&#039;objNum&#039; =&gt; $options[&#039;objNum&#039;], &#039;fontNum&#039; =&gt; $options[&#039;fontNum&#039;]];
                break;

            case &#039;extGState&#039;:
                $o[&#039;info&#039;][&#039;extGStates&#039;][] = [&#039;objNum&#039; =&gt; $options[&#039;objNum&#039;], &#039;stateNum&#039; =&gt; $options[&#039;stateNum&#039;]];
                break;

            case &#039;xObject&#039;:
                $o[&#039;info&#039;][&#039;xObjects&#039;][] = [&#039;objNum&#039; =&gt; $options[&#039;objNum&#039;], &#039;label&#039; =&gt; $options[&#039;label&#039;]];
                break;

            case &#039;out&#039;:
                if (count($o[&#039;info&#039;][&#039;pages&#039;])) {
                    $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Pages\n/Kids [&quot;;
                    foreach ($o[&#039;info&#039;][&#039;pages&#039;] as $v) {
                        $res .= &quot;$v 0 R\n&quot;;
                    }

                    $res .= &quot;]\n/Count &quot; . count($this-&gt;objects[$id][&#039;info&#039;][&#039;pages&#039;]);

                    if ((isset($o[&#039;info&#039;][&#039;fonts&#039;]) &amp;&amp; count($o[&#039;info&#039;][&#039;fonts&#039;])) ||
                        isset($o[&#039;info&#039;][&#039;procset&#039;]) ||
                        (isset($o[&#039;info&#039;][&#039;extGStates&#039;]) &amp;&amp; count($o[&#039;info&#039;][&#039;extGStates&#039;]))
                    ) {
                        $res .= &quot;\n/Resources &lt;&lt;&quot;;

                        if (isset($o[&#039;info&#039;][&#039;procset&#039;])) {
                            $res .= &quot;\n/ProcSet &quot; . $o[&#039;info&#039;][&#039;procset&#039;] . &quot; 0 R&quot;;
                        }

                        if (isset($o[&#039;info&#039;][&#039;fonts&#039;]) &amp;&amp; count($o[&#039;info&#039;][&#039;fonts&#039;])) {
                            $res .= &quot;\n/Font &lt;&lt; &quot;;
                            foreach ($o[&#039;info&#039;][&#039;fonts&#039;] as $finfo) {
                                $res .= &quot;\n/F&quot; . $finfo[&#039;fontNum&#039;] . &quot; &quot; . $finfo[&#039;objNum&#039;] . &quot; 0 R&quot;;
                            }
                            $res .= &quot;\n&gt;&gt;&quot;;
                        }

                        if (isset($o[&#039;info&#039;][&#039;xObjects&#039;]) &amp;&amp; count($o[&#039;info&#039;][&#039;xObjects&#039;])) {
                            $res .= &quot;\n/XObject &lt;&lt; &quot;;
                            foreach ($o[&#039;info&#039;][&#039;xObjects&#039;] as $finfo) {
                                $res .= &quot;\n/&quot; . $finfo[&#039;label&#039;] . &quot; &quot; . $finfo[&#039;objNum&#039;] . &quot; 0 R&quot;;
                            }
                            $res .= &quot;\n&gt;&gt;&quot;;
                        }

                        if (isset($o[&#039;info&#039;][&#039;extGStates&#039;]) &amp;&amp; count($o[&#039;info&#039;][&#039;extGStates&#039;])) {
                            $res .= &quot;\n/ExtGState &lt;&lt; &quot;;
                            foreach ($o[&#039;info&#039;][&#039;extGStates&#039;] as $gstate) {
                                $res .= &quot;\n/GS&quot; . $gstate[&#039;stateNum&#039;] . &quot; &quot; . $gstate[&#039;objNum&#039;] . &quot; 0 R&quot;;
                            }
                            $res .= &quot;\n&gt;&gt;&quot;;
                        }

                        $res .= &quot;\n&gt;&gt;&quot;;
                        if (isset($o[&#039;info&#039;][&#039;mediaBox&#039;])) {
                            $tmp = $o[&#039;info&#039;][&#039;mediaBox&#039;];
                            $res .= &quot;\n/MediaBox [&quot; . sprintf(
                                    &#039;%.3F %.3F %.3F %.3F&#039;,
                                    $tmp[0],
                                    $tmp[1],
                                    $tmp[2],
                                    $tmp[3]
                                ) . &#039;]&#039;;
                        }
                    }

                    $res .= &quot;\n &gt;&gt;\nendobj&quot;;
                } else {
                    $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Pages\n/Count 0\n&gt;&gt;\nendobj&quot;;
                }

                return $res;
        }

        return null;
    }

    /**
     * define the outlines in the doc, empty for now
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return string|null
     */
    protected function o_outlines($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;outlines&#039;, &#039;info&#039; =&gt; [&#039;outlines&#039; =&gt; []]];
                $this-&gt;o_catalog($this-&gt;catalogId, &#039;outlines&#039;, $id);
                break;

            case &#039;outline&#039;:
                $o[&#039;info&#039;][&#039;outlines&#039;][] = $options;
                break;

            case &#039;out&#039;:
                if (count($o[&#039;info&#039;][&#039;outlines&#039;])) {
                    $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Outlines /Kids [&quot;;
                    foreach ($o[&#039;info&#039;][&#039;outlines&#039;] as $v) {
                        $res .= &quot;$v 0 R &quot;;
                    }

                    $res .= &quot;] /Count &quot; . count($o[&#039;info&#039;][&#039;outlines&#039;]) . &quot; &gt;&gt;\nendobj&quot;;
                } else {
                    $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Outlines /Count 0 &gt;&gt;\nendobj&quot;;
                }

                return $res;
        }

        return null;
    }

    /**
     * an object to hold the font description
     *
     * @param $id
     * @param $action
     * @param string|array $options
     * @return string|null
     * @throws FontNotFoundException
     */
    protected function o_font($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [
                    &#039;t&#039;    =&gt; &#039;font&#039;,
                    &#039;info&#039; =&gt; [
                        &#039;name&#039;         =&gt; $options[&#039;name&#039;],
                        &#039;fontFileName&#039; =&gt; $options[&#039;fontFileName&#039;],
                        &#039;SubType&#039;      =&gt; &#039;Type1&#039;,
                        &#039;isSubsetting&#039;   =&gt; $options[&#039;isSubsetting&#039;]
                    ]
                ];
                $fontNum = $this-&gt;numFonts;
                $this-&gt;objects[$id][&#039;info&#039;][&#039;fontNum&#039;] = $fontNum;

                // deal with the encoding and the differences
                if (isset($options[&#039;differences&#039;])) {
                    // then we&#039;ll need an encoding dictionary
                    $this-&gt;numObj++;
                    $this-&gt;o_fontEncoding($this-&gt;numObj, &#039;new&#039;, $options);
                    $this-&gt;objects[$id][&#039;info&#039;][&#039;encodingDictionary&#039;] = $this-&gt;numObj;
                } else {
                    if (isset($options[&#039;encoding&#039;])) {
                        // we can specify encoding here
                        switch ($options[&#039;encoding&#039;]) {
                            case &#039;WinAnsiEncoding&#039;:
                            case &#039;MacRomanEncoding&#039;:
                            case &#039;MacExpertEncoding&#039;:
                                $this-&gt;objects[$id][&#039;info&#039;][&#039;encoding&#039;] = $options[&#039;encoding&#039;];
                                break;

                            case &#039;none&#039;:
                                break;

                            default:
                                $this-&gt;objects[$id][&#039;info&#039;][&#039;encoding&#039;] = &#039;WinAnsiEncoding&#039;;
                                break;
                        }
                    } else {
                        $this-&gt;objects[$id][&#039;info&#039;][&#039;encoding&#039;] = &#039;WinAnsiEncoding&#039;;
                    }
                }

                if ($this-&gt;fonts[$options[&#039;fontFileName&#039;]][&#039;isUnicode&#039;]) {
                    // For Unicode fonts, we need to incorporate font data into
                    // sub-sections that are linked from the primary font section.
                    // Look at o_fontGIDtoCID and o_fontDescendentCID functions
                    // for more information.
                    //
                    // All of this code is adapted from the excellent changes made to
                    // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)

                    $toUnicodeId = ++$this-&gt;numObj;
                    $this-&gt;o_toUnicode($toUnicodeId, &#039;new&#039;);
                    $this-&gt;objects[$id][&#039;info&#039;][&#039;toUnicode&#039;] = $toUnicodeId;

                    $cidFontId = ++$this-&gt;numObj;
                    $this-&gt;o_fontDescendentCID($cidFontId, &#039;new&#039;, $options);
                    $this-&gt;objects[$id][&#039;info&#039;][&#039;cidFont&#039;] = $cidFontId;
                }

                // also tell the pages node about the new font
                $this-&gt;o_pages($this-&gt;currentNode, &#039;font&#039;, [&#039;fontNum&#039; =&gt; $fontNum, &#039;objNum&#039; =&gt; $id]);
                break;

            case &#039;add&#039;:
                $font_options = $this-&gt;processFont($id, $o[&#039;info&#039;]);

                if ($font_options !== false) {
                    foreach ($font_options as $k =&gt; $v) {
                        switch ($k) {
                            case &#039;BaseFont&#039;:
                                $o[&#039;info&#039;][&#039;name&#039;] = $v;
                                break;
                            case &#039;FirstChar&#039;:
                            case &#039;LastChar&#039;:
                            case &#039;Widths&#039;:
                            case &#039;FontDescriptor&#039;:
                            case &#039;SubType&#039;:
                                $this-&gt;addMessage(&#039;o_font &#039; . $k . &quot; : &quot; . $v);
                                $o[&#039;info&#039;][$k] = $v;
                                break;
                        }
                    }

                    // pass values down to descendent font
                    if (isset($o[&#039;info&#039;][&#039;cidFont&#039;])) {
                        $this-&gt;o_fontDescendentCID($o[&#039;info&#039;][&#039;cidFont&#039;], &#039;add&#039;, $font_options);
                    }
                }
                break;

            case &#039;out&#039;:
                if ($this-&gt;fonts[$this-&gt;objects[$id][&#039;info&#039;][&#039;fontFileName&#039;]][&#039;isUnicode&#039;]) {
                    // For Unicode fonts, we need to incorporate font data into
                    // sub-sections that are linked from the primary font section.
                    // Look at o_fontGIDtoCID and o_fontDescendentCID functions
                    // for more information.
                    //
                    // All of this code is adapted from the excellent changes made to
                    // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)

                    $res = &quot;\n$id 0 obj\n&lt;&lt;/Type /Font\n/Subtype /Type0\n&quot;;
                    $res .= &quot;/BaseFont /&quot; . $o[&#039;info&#039;][&#039;name&#039;] . &quot;\n&quot;;

                    // The horizontal identity mapping for 2-byte CIDs; may be used
                    // with CIDFonts using any Registry, Ordering, and Supplement values.
                    $res .= &quot;/Encoding /Identity-H\n&quot;;
                    $res .= &quot;/DescendantFonts [&quot; . $o[&#039;info&#039;][&#039;cidFont&#039;] . &quot; 0 R]\n&quot;;
                    $res .= &quot;/ToUnicode &quot; . $o[&#039;info&#039;][&#039;toUnicode&#039;] . &quot; 0 R\n&quot;;
                    $res .= &quot;&gt;&gt;\n&quot;;
                    $res .= &quot;endobj&quot;;
                } else {
                    $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Font\n/Subtype /&quot; . $o[&#039;info&#039;][&#039;SubType&#039;] . &quot;\n&quot;;
                    $res .= &quot;/Name /F&quot; . $o[&#039;info&#039;][&#039;fontNum&#039;] . &quot;\n&quot;;
                    $res .= &quot;/BaseFont /&quot; . $o[&#039;info&#039;][&#039;name&#039;] . &quot;\n&quot;;

                    if (isset($o[&#039;info&#039;][&#039;encodingDictionary&#039;])) {
                        // then place a reference to the dictionary
                        $res .= &quot;/Encoding &quot; . $o[&#039;info&#039;][&#039;encodingDictionary&#039;] . &quot; 0 R\n&quot;;
                    } else {
                        if (isset($o[&#039;info&#039;][&#039;encoding&#039;])) {
                            // use the specified encoding
                            $res .= &quot;/Encoding /&quot; . $o[&#039;info&#039;][&#039;encoding&#039;] . &quot;\n&quot;;
                        }
                    }

                    if (isset($o[&#039;info&#039;][&#039;FirstChar&#039;])) {
                        $res .= &quot;/FirstChar &quot; . $o[&#039;info&#039;][&#039;FirstChar&#039;] . &quot;\n&quot;;
                    }

                    if (isset($o[&#039;info&#039;][&#039;LastChar&#039;])) {
                        $res .= &quot;/LastChar &quot; . $o[&#039;info&#039;][&#039;LastChar&#039;] . &quot;\n&quot;;
                    }

                    if (isset($o[&#039;info&#039;][&#039;Widths&#039;])) {
                        $res .= &quot;/Widths &quot; . $o[&#039;info&#039;][&#039;Widths&#039;] . &quot; 0 R\n&quot;;
                    }

                    if (isset($o[&#039;info&#039;][&#039;FontDescriptor&#039;])) {
                        $res .= &quot;/FontDescriptor &quot; . $o[&#039;info&#039;][&#039;FontDescriptor&#039;] . &quot; 0 R\n&quot;;
                    }

                    $res .= &quot;&gt;&gt;\n&quot;;
                    $res .= &quot;endobj&quot;;
                }

                return $res;
        }

        return null;
    }

    protected function getFontSubsettingTag(array $font): string
    {
        // convert font num to hexavigesimal numeral system letters A - Z only
        $base_26 = strtoupper(base_convert($font[&#039;fontNum&#039;], 10, 26));
        for ($i = 0; $i &lt; strlen($base_26); $i++) {
            $char = $base_26[$i];
            if ($char &lt;= &quot;9&quot;) {
                $base_26[$i] = chr(65 + intval($char));
            } else {
                $base_26[$i] = chr(ord($char) + 10);
            }
        }

        return &#039;SUB&#039; . str_pad($base_26, 3, &#039;A&#039;, STR_PAD_LEFT);
    }

    /**
     * @param int $fontObjId
     * @param array $object_info
     * @return array|false
     * @throws FontNotFoundException
     */
    private function processFont(int $fontObjId, array $object_info)
    {
        $fontFileName = $object_info[&#039;fontFileName&#039;];
        if (!isset($this-&gt;fonts[$fontFileName])) {
            return false;
        }

        $font = &amp;$this-&gt;fonts[$fontFileName];

        $fileSuffix = $font[&#039;fileSuffix&#039;];
        $fileSuffixLower = strtolower($font[&#039;fileSuffix&#039;]);
        $fbfile = &quot;$fontFileName.$fileSuffix&quot;;
        $isTtfFont = $fileSuffixLower === &#039;ttf&#039;;
        $isPfbFont = $fileSuffixLower === &#039;pfb&#039;;

        $this-&gt;addMessage(&#039;selectFont: checking for - &#039; . $fbfile);

        if (!$fileSuffix) {
            $this-&gt;addMessage(
                &#039;selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts&#039;
            );

            return false;
        } else {
            $adobeFontName = isset($font[&#039;PostScriptName&#039;]) ? $font[&#039;PostScriptName&#039;] : $font[&#039;FontName&#039;];
            //        $fontObj = $this-&gt;numObj;
            $this-&gt;addMessage(&quot;selectFont: adding font file - $fbfile - $adobeFontName&quot;);

            // find the array of font widths, and put that into an object.
            $firstChar = -1;
            $lastChar = 0;
            $widths = [];
            $cid_widths = [];

            foreach ($font[&#039;C&#039;] as $num =&gt; $d) {
                if (intval($num) &gt; 0 || $num == &#039;0&#039;) {
                    if (!$font[&#039;isUnicode&#039;]) {
                        // With Unicode, widths array isn&#039;t used
                        if ($lastChar &gt; 0 &amp;&amp; $num &gt; $lastChar + 1) {
                            for ($i = $lastChar + 1; $i &lt; $num; $i++) {
                                $widths[] = 0;
                            }
                        }
                    }

                    $widths[] = $d;

                    if ($font[&#039;isUnicode&#039;]) {
                        $cid_widths[$num] = $d;
                    }

                    if ($firstChar == -1) {
                        $firstChar = $num;
                    }

                    $lastChar = $num;
                }
            }

            // also need to adjust the widths for the differences array
            if (isset($object[&#039;differences&#039;])) {
                foreach ($object[&#039;differences&#039;] as $charNum =&gt; $charName) {
                    if ($charNum &gt; $lastChar) {
                        if (!$object[&#039;isUnicode&#039;]) {
                            // With Unicode, widths array isn&#039;t used
                            for ($i = $lastChar + 1; $i &lt;= $charNum; $i++) {
                                $widths[] = 0;
                            }
                        }

                        $lastChar = $charNum;
                    }

                    if (isset($font[&#039;C&#039;][$charName])) {
                        $widths[$charNum - $firstChar] = $font[&#039;C&#039;][$charName];
                        if ($font[&#039;isUnicode&#039;]) {
                            $cid_widths[$charName] = $font[&#039;C&#039;][$charName];
                        }
                    }
                }
            }

            if ($font[&#039;isUnicode&#039;]) {
                $font[&#039;CIDWidths&#039;] = $cid_widths;
            }

            $this-&gt;addMessage(&#039;selectFont: FirstChar = &#039; . $firstChar);
            $this-&gt;addMessage(&#039;selectFont: LastChar = &#039; . $lastChar);

            $widthid = -1;

            if (!$font[&#039;isUnicode&#039;]) {
                // With Unicode, widths array isn&#039;t used

                $this-&gt;numObj++;
                $this-&gt;o_contents($this-&gt;numObj, &#039;new&#039;, &#039;raw&#039;);
                $this-&gt;objects[$this-&gt;numObj][&#039;c&#039;] .= &#039;[&#039; . implode(&#039; &#039;, $widths) . &#039;]&#039;;
                $widthid = $this-&gt;numObj;
            }

            $missing_width = 500;
            $stemV = 70;

            if (isset($font[&#039;MissingWidth&#039;])) {
                $missing_width = $font[&#039;MissingWidth&#039;];
            }
            if (isset($font[&#039;StdVW&#039;])) {
                $stemV = $font[&#039;StdVW&#039;];
            } else {
                if (isset($font[&#039;Weight&#039;]) &amp;&amp; preg_match(&#039;!(bold|black)!i&#039;, $font[&#039;Weight&#039;])) {
                    $stemV = 120;
                }
            }

            // load the pfb file, and put that into an object too.
            // note that pdf supports only binary format type 1 font files, though there is a
            // simple utility to convert them from pfa to pfb.
            if (!$font[&#039;isSubsetting&#039;]) {
                $data = file_get_contents($fbfile);
            } else {
                $adobeFontName = $this-&gt;getFontSubsettingTag($font) . &#039;+&#039; . $adobeFontName;
                $this-&gt;stringSubsets[$fontFileName][] = 32; // Force space if not in yet

                $subset = $this-&gt;stringSubsets[$fontFileName];
                sort($subset);

                // Load font
                $font_obj = Font::load($fbfile);
                $font_obj-&gt;parse();

                // Define subset
                $font_obj-&gt;setSubset($subset);
                $font_obj-&gt;reduce();

                // Write new font
                $tmp_name = @tempnam($this-&gt;tmp, &quot;cpdf_subset_&quot;);
                $font_obj-&gt;open($tmp_name, BinaryStream::modeReadWrite);
                $font_obj-&gt;encode([&quot;OS/2&quot;]);
                $font_obj-&gt;close();

                // Parse the new font to get cid2gid and widths
                $font_obj = Font::load($tmp_name);

                // Find Unicode char map table
                $subtable = null;
                foreach ($font_obj-&gt;getData(&quot;cmap&quot;, &quot;subtables&quot;) as $_subtable) {
                    if ($_subtable[&quot;platformID&quot;] == 0 || $_subtable[&quot;platformID&quot;] == 3 &amp;&amp; $_subtable[&quot;platformSpecificID&quot;] == 1) {
                        $subtable = $_subtable;
                        break;
                    }
                }

                if ($subtable) {
                    $glyphIndexArray = $subtable[&quot;glyphIndexArray&quot;];
                    $hmtx = $font_obj-&gt;getData(&quot;hmtx&quot;);

                    unset($glyphIndexArray[0xFFFF]);

                    $cidtogid = str_pad(&#039;&#039;, max(array_keys($glyphIndexArray)) * 2 + 1, &quot;\x00&quot;);
                    $font[&#039;CIDWidths&#039;] = [];
                    foreach ($glyphIndexArray as $cid =&gt; $gid) {
                        if ($cid &gt;= 0 &amp;&amp; $cid &lt; 0xFFFF &amp;&amp; $gid) {
                            $cidtogid[$cid * 2] = chr($gid &gt;&gt; 8);
                            $cidtogid[$cid * 2 + 1] = chr($gid &amp; 0xFF);
                        }

                        $width = $font_obj-&gt;normalizeFUnit(isset($hmtx[$gid]) ? $hmtx[$gid][0] : $hmtx[0][0]);
                        $font[&#039;CIDWidths&#039;][$cid] = $width;
                    }

                    $font[&#039;CIDtoGID&#039;] = base64_encode(gzcompress($cidtogid));
                    $font[&#039;CIDtoGID_Compressed&#039;] = true;

                    $data = file_get_contents($tmp_name);
                } else {
                    $data = file_get_contents($fbfile);
                }

                $font_obj-&gt;close();
                unlink($tmp_name);
            }

            // create the font descriptor
            $this-&gt;numObj++;
            $fontDescriptorId = $this-&gt;numObj;

            $this-&gt;numObj++;
            $pfbid = $this-&gt;numObj;

            // determine flags (more than a little flakey, hopefully will not matter much)
            $flags = 0;

            if ($font[&#039;ItalicAngle&#039;] != 0) {
                $flags += pow(2, 6);
            }

            if ($font[&#039;IsFixedPitch&#039;] === &#039;true&#039;) {
                $flags += 1;
            }

            $flags += pow(2, 5); // assume non-sybolic
            $list = [
                &#039;Ascent&#039;       =&gt; &#039;Ascender&#039;,
                &#039;CapHeight&#039;    =&gt; &#039;Ascender&#039;, //FIXME: php-font-lib is not grabbing this value, so we&#039;ll fake it and use the Ascender value // &#039;CapHeight&#039;
                &#039;MissingWidth&#039; =&gt; &#039;MissingWidth&#039;,
                &#039;Descent&#039;      =&gt; &#039;Descender&#039;,
                &#039;FontBBox&#039;     =&gt; &#039;FontBBox&#039;,
                &#039;ItalicAngle&#039;  =&gt; &#039;ItalicAngle&#039;
            ];
            $fdopt = [
                &#039;Flags&#039;    =&gt; $flags,
                &#039;FontName&#039; =&gt; $adobeFontName,
                &#039;StemV&#039;    =&gt; $stemV
            ];

            foreach ($list as $k =&gt; $v) {
                if (isset($font[$v])) {
                    $fdopt[$k] = $font[$v];
                }
            }

            if ($isPfbFont) {
                $fdopt[&#039;FontFile&#039;] = $pfbid;
            } elseif ($isTtfFont) {
                $fdopt[&#039;FontFile2&#039;] = $pfbid;
            }

            $this-&gt;o_fontDescriptor($fontDescriptorId, &#039;new&#039;, $fdopt);

            // embed the font program
            $this-&gt;o_contents($this-&gt;numObj, &#039;new&#039;);
            $this-&gt;objects[$pfbid][&#039;c&#039;] .= $data;

            // determine the cruicial lengths within this file
            if ($isPfbFont) {
                $l1 = strpos($data, &#039;eexec&#039;) + 6;
                $l2 = strpos($data, &#039;00000000&#039;) - $l1;
                $l3 = mb_strlen($data, &#039;8bit&#039;) - $l2 - $l1;
                $this-&gt;o_contents(
                    $this-&gt;numObj,
                    &#039;add&#039;,
                    [&#039;Length1&#039; =&gt; $l1, &#039;Length2&#039; =&gt; $l2, &#039;Length3&#039; =&gt; $l3]
                );
            } elseif ($isTtfFont) {
                $l1 = mb_strlen($data, &#039;8bit&#039;);
                $this-&gt;o_contents($this-&gt;numObj, &#039;add&#039;, [&#039;Length1&#039; =&gt; $l1]);
            }

            // tell the font object about all this new stuff
            $options = [
                &#039;BaseFont&#039;       =&gt; $adobeFontName,
                &#039;MissingWidth&#039;   =&gt; $missing_width,
                &#039;Widths&#039;         =&gt; $widthid,
                &#039;FirstChar&#039;      =&gt; $firstChar,
                &#039;LastChar&#039;       =&gt; $lastChar,
                &#039;FontDescriptor&#039; =&gt; $fontDescriptorId
            ];

            if ($isTtfFont) {
                $options[&#039;SubType&#039;] = &#039;TrueType&#039;;
            }

            $this-&gt;addMessage(&quot;adding extra info to font.($fontObjId)&quot;);

            foreach ($options as $fk =&gt; $fv) {
                $this-&gt;addMessage(&quot;$fk : $fv&quot;);
            }
        }

        return $options;
    }

    /**
     * A toUnicode section, needed for unicode fonts
     *
     * @param $id
     * @param $action
     * @return null|string
     */
    protected function o_toUnicode($id, $action)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [
                    &#039;t&#039;    =&gt; &#039;toUnicode&#039;
                ];
                break;
            case &#039;add&#039;:
                break;
            case &#039;out&#039;:
                $ordering = &#039;UCS&#039;;
                $registry = &#039;Adobe&#039;;

                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                    $ordering = $this-&gt;ARC4($ordering);
                    $registry = $this-&gt;filterText($this-&gt;ARC4($registry), false, false);
                }

                $stream = &lt;&lt;&lt;EOT
/CIDInit /ProcSet findresource begin
12 dict begin
begincmap
/CIDSystemInfo
&lt;&lt;/Registry ($registry)
/Ordering ($ordering)
/Supplement 0
&gt;&gt; def
/CMapName /Adobe-Identity-UCS def
/CMapType 2 def
1 begincodespacerange
&lt;0000&gt; &lt;FFFF&gt;
endcodespacerange
1 beginbfrange
&lt;0000&gt; &lt;FFFF&gt; &lt;0000&gt;
endbfrange
endcmap
CMapName currentdict /CMap defineresource pop
end
end
EOT;

                $res = &quot;\n$id 0 obj\n&quot;;
                $res .= &quot;&lt;&lt;/Length &quot; . mb_strlen($stream, &#039;8bit&#039;) . &quot; &gt;&gt;\n&quot;;
                $res .= &quot;stream\n&quot; . $stream . &quot;\nendstream&quot; . &quot;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * a font descriptor, needed for including additional fonts
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_fontDescriptor($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;fontDescriptor&#039;, &#039;info&#039; =&gt; $options];
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /FontDescriptor\n&quot;;
                foreach ($o[&#039;info&#039;] as $label =&gt; $value) {
                    switch ($label) {
                        case &#039;Ascent&#039;:
                        case &#039;CapHeight&#039;:
                        case &#039;Descent&#039;:
                        case &#039;Flags&#039;:
                        case &#039;ItalicAngle&#039;:
                        case &#039;StemV&#039;:
                        case &#039;AvgWidth&#039;:
                        case &#039;Leading&#039;:
                        case &#039;MaxWidth&#039;:
                        case &#039;MissingWidth&#039;:
                        case &#039;StemH&#039;:
                        case &#039;XHeight&#039;:
                        case &#039;CharSet&#039;:
                            if (mb_strlen($value, &#039;8bit&#039;)) {
                                $res .= &quot;/$label $value\n&quot;;
                            }

                            break;
                        case &#039;FontFile&#039;:
                        case &#039;FontFile2&#039;:
                        case &#039;FontFile3&#039;:
                            $res .= &quot;/$label $value 0 R\n&quot;;
                            break;

                        case &#039;FontBBox&#039;:
                            $res .= &quot;/$label [$value[0] $value[1] $value[2] $value[3]]\n&quot;;
                            break;

                        case &#039;FontName&#039;:
                            $res .= &quot;/$label /$value\n&quot;;
                            break;
                    }
                }

                $res .= &quot;&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * the font encoding
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_fontEncoding($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                // the options array should contain &#039;differences&#039; and maybe &#039;encoding&#039;
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;fontEncoding&#039;, &#039;info&#039; =&gt; $options];
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Encoding\n&quot;;
                if (!isset($o[&#039;info&#039;][&#039;encoding&#039;])) {
                    $o[&#039;info&#039;][&#039;encoding&#039;] = &#039;WinAnsiEncoding&#039;;
                }

                if ($o[&#039;info&#039;][&#039;encoding&#039;] !== &#039;none&#039;) {
                    $res .= &quot;/BaseEncoding /&quot; . $o[&#039;info&#039;][&#039;encoding&#039;] . &quot;\n&quot;;
                }

                $res .= &quot;/Differences \n[&quot;;

                $onum = -100;

                foreach ($o[&#039;info&#039;][&#039;differences&#039;] as $num =&gt; $label) {
                    if ($num != $onum + 1) {
                        // we cannot make use of consecutive numbering
                        $res .= &quot;\n$num /$label&quot;;
                    } else {
                        $res .= &quot; /$label&quot;;
                    }

                    $onum = $num;
                }

                $res .= &quot;\n]\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * a descendent cid font, needed for unicode fonts
     *
     * @param $id
     * @param $action
     * @param string|array $options
     * @return null|string
     */
    protected function o_fontDescendentCID($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;fontDescendentCID&#039;, &#039;info&#039; =&gt; $options];

                // we need a CID system info section
                $cidSystemInfoId = ++$this-&gt;numObj;
                $this-&gt;o_cidSystemInfo($cidSystemInfoId, &#039;new&#039;);
                $this-&gt;objects[$id][&#039;info&#039;][&#039;cidSystemInfo&#039;] = $cidSystemInfoId;

                // and a CID to GID map
                $cidToGidMapId = ++$this-&gt;numObj;
                $this-&gt;o_fontGIDtoCIDMap($cidToGidMapId, &#039;new&#039;, $options);
                $this-&gt;objects[$id][&#039;info&#039;][&#039;cidToGidMap&#039;] = $cidToGidMapId;
                break;

            case &#039;add&#039;:
                foreach ($options as $k =&gt; $v) {
                    switch ($k) {
                        case &#039;BaseFont&#039;:
                            $o[&#039;info&#039;][&#039;name&#039;] = $v;
                            break;

                        case &#039;FirstChar&#039;:
                        case &#039;LastChar&#039;:
                        case &#039;MissingWidth&#039;:
                        case &#039;FontDescriptor&#039;:
                        case &#039;SubType&#039;:
                            $this-&gt;addMessage(&quot;o_fontDescendentCID $k : $v&quot;);
                            $o[&#039;info&#039;][$k] = $v;
                            break;
                    }
                }

                // pass values down to cid to gid map
                $this-&gt;o_fontGIDtoCIDMap($o[&#039;info&#039;][&#039;cidToGidMap&#039;], &#039;add&#039;, $options);
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&quot;;
                $res .= &quot;&lt;&lt;/Type /Font\n&quot;;
                $res .= &quot;/Subtype /CIDFontType2\n&quot;;
                $res .= &quot;/BaseFont /&quot; . $o[&#039;info&#039;][&#039;name&#039;] . &quot;\n&quot;;
                $res .= &quot;/CIDSystemInfo &quot; . $o[&#039;info&#039;][&#039;cidSystemInfo&#039;] . &quot; 0 R\n&quot;;
                //      if (isset($o[&#039;info&#039;][&#039;FirstChar&#039;])) {
                //        $res.= &quot;/FirstChar &quot;.$o[&#039;info&#039;][&#039;FirstChar&#039;].&quot;\n&quot;;
                //      }

                //      if (isset($o[&#039;info&#039;][&#039;LastChar&#039;])) {
                //        $res.= &quot;/LastChar &quot;.$o[&#039;info&#039;][&#039;LastChar&#039;].&quot;\n&quot;;
                //      }
                if (isset($o[&#039;info&#039;][&#039;FontDescriptor&#039;])) {
                    $res .= &quot;/FontDescriptor &quot; . $o[&#039;info&#039;][&#039;FontDescriptor&#039;] . &quot; 0 R\n&quot;;
                }

                if (isset($o[&#039;info&#039;][&#039;MissingWidth&#039;])) {
                    $res .= &quot;/DW &quot; . $o[&#039;info&#039;][&#039;MissingWidth&#039;] . &quot;\n&quot;;
                }

                if (isset($o[&#039;info&#039;][&#039;fontFileName&#039;]) &amp;&amp; isset($this-&gt;fonts[$o[&#039;info&#039;][&#039;fontFileName&#039;]][&#039;CIDWidths&#039;])) {
                    $cid_widths = &amp;$this-&gt;fonts[$o[&#039;info&#039;][&#039;fontFileName&#039;]][&#039;CIDWidths&#039;];
                    $w = &#039;&#039;;
                    foreach ($cid_widths as $cid =&gt; $width) {
                        $w .= &quot;$cid [$width] &quot;;
                    }
                    $res .= &quot;/W [$w]\n&quot;;
                }

                $res .= &quot;/CIDToGIDMap &quot; . $o[&#039;info&#039;][&#039;cidToGidMap&#039;] . &quot; 0 R\n&quot;;
                $res .= &quot;&gt;&gt;\n&quot;;
                $res .= &quot;endobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * CID system info section, needed for unicode fonts
     *
     * @param $id
     * @param $action
     * @return null|string
     */
    protected function o_cidSystemInfo($id, $action)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [
                    &#039;t&#039; =&gt; &#039;cidSystemInfo&#039;
                ];
                break;
            case &#039;add&#039;:
                break;
            case &#039;out&#039;:
                $ordering = &#039;UCS&#039;;
                $registry = &#039;Adobe&#039;;

                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                    $ordering = $this-&gt;ARC4($ordering);
                    $registry = $this-&gt;ARC4($registry);
                }


                $res = &quot;\n$id 0 obj\n&quot;;

                $res .= &#039;&lt;&lt;/Registry (&#039; . $registry . &quot;)\n&quot;; // A string identifying an issuer of character collections
                $res .= &#039;/Ordering (&#039; . $ordering . &quot;)\n&quot;; // A string that uniquely names a character collection issued by a specific registry
                $res .= &quot;/Supplement 0\n&quot;; // The supplement number of the character collection.
                $res .= &quot;&gt;&gt;&quot;;

                $res .= &quot;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * a font glyph to character map, needed for unicode fonts
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_fontGIDtoCIDMap($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;fontGIDtoCIDMap&#039;, &#039;info&#039; =&gt; $options];
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&quot;;
                $fontFileName = $o[&#039;info&#039;][&#039;fontFileName&#039;];
                $tmp = $this-&gt;fonts[$fontFileName][&#039;CIDtoGID&#039;] = base64_decode($this-&gt;fonts[$fontFileName][&#039;CIDtoGID&#039;]);

                $compressed = isset($this-&gt;fonts[$fontFileName][&#039;CIDtoGID_Compressed&#039;]) &amp;&amp;
                    $this-&gt;fonts[$fontFileName][&#039;CIDtoGID_Compressed&#039;];

                if (!$compressed &amp;&amp; isset($o[&#039;raw&#039;])) {
                    $res .= $tmp;
                } else {
                    $res .= &quot;&lt;&lt;&quot;;

                    if (!$compressed &amp;&amp; $this-&gt;compressionReady &amp;&amp; $this-&gt;options[&#039;compression&#039;]) {
                        // then implement ZLIB based compression on this content stream
                        $compressed = true;
                        $tmp = gzcompress($tmp, 6);
                    }
                    if ($compressed) {
                        $res .= &quot;\n/Filter /FlateDecode&quot;;
                    }

                    if ($this-&gt;encrypted) {
                        $this-&gt;encryptInit($id);
                        $tmp = $this-&gt;ARC4($tmp);
                    }

                    $res .= &quot;\n/Length &quot; . mb_strlen($tmp, &#039;8bit&#039;) . &quot;&gt;&gt;\nstream\n$tmp\nendstream&quot;;
                }

                $res .= &quot;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * the document procset, solves some problems with printing to old PS printers
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_procset($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;procset&#039;, &#039;info&#039; =&gt; [&#039;PDF&#039; =&gt; 1, &#039;Text&#039; =&gt; 1]];
                $this-&gt;o_pages($this-&gt;currentNode, &#039;procset&#039;, $id);
                $this-&gt;procsetObjectId = $id;
                break;

            case &#039;add&#039;:
                // this is to add new items to the procset list, despite the fact that this is considered
                // obsolete, the items are required for printing to some postscript printers
                switch ($options) {
                    case &#039;ImageB&#039;:
                    case &#039;ImageC&#039;:
                    case &#039;ImageI&#039;:
                        $o[&#039;info&#039;][$options] = 1;
                        break;
                }
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n[&quot;;
                foreach ($o[&#039;info&#039;] as $label =&gt; $val) {
                    $res .= &quot;/$label &quot;;
                }
                $res .= &quot;]\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * define the document information
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_info($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;infoObject = $id;
                $date = &#039;D:&#039; . @date(&#039;Ymd&#039;);
                $this-&gt;objects[$id] = [
                    &#039;t&#039;    =&gt; &#039;info&#039;,
                    &#039;info&#039; =&gt; [
                        &#039;Producer&#039;      =&gt; &#039;CPDF (dompdf)&#039;,
                        &#039;CreationDate&#039; =&gt; $date
                    ]
                ];
                break;
            case &#039;Title&#039;:
            case &#039;Author&#039;:
            case &#039;Subject&#039;:
            case &#039;Keywords&#039;:
            case &#039;Creator&#039;:
            case &#039;Producer&#039;:
            case &#039;CreationDate&#039;:
            case &#039;ModDate&#039;:
            case &#039;Trapped&#039;:
                $this-&gt;objects[$id][&#039;info&#039;][$action] = $options;
                break;

            case &#039;out&#039;:
                $encrypted = $this-&gt;encrypted;
                if ($encrypted) {
                    $this-&gt;encryptInit($id);
                }

                $res = &quot;\n$id 0 obj\n&lt;&lt;\n&quot;;
                $o = &amp;$this-&gt;objects[$id];
                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    $res .= &quot;/$k (&quot;;

                    // dates must be outputted as-is, without Unicode transformations
                    if ($k !== &#039;CreationDate&#039; &amp;&amp; $k !== &#039;ModDate&#039;) {
                        $v = $this-&gt;utf8toUtf16BE($v);
                    }

                    if ($encrypted) {
                        $v = $this-&gt;ARC4($v);
                    }

                    $res .= $this-&gt;filterText($v, false, false);
                    $res .= &quot;)\n&quot;;
                }

                $res .= &quot;&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * an action object, used to link to URLS initially
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_action($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                if (is_array($options)) {
                    $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;action&#039;, &#039;info&#039; =&gt; $options, &#039;type&#039; =&gt; $options[&#039;type&#039;]];
                } else {
                    // then assume a URI action
                    $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;action&#039;, &#039;info&#039; =&gt; $options, &#039;type&#039; =&gt; &#039;URI&#039;];
                }
                break;

            case &#039;out&#039;:
                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                }

                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Action&quot;;
                switch ($o[&#039;type&#039;]) {
                    case &#039;ilink&#039;:
                        if (!isset($this-&gt;destinations[(string)$o[&#039;info&#039;][&#039;label&#039;]])) {
                            break;
                        }

                        // there will be an &#039;label&#039; setting, this is the name of the destination
                        $res .= &quot;\n/S /GoTo\n/D &quot; . $this-&gt;destinations[(string)$o[&#039;info&#039;][&#039;label&#039;]] . &quot; 0 R&quot;;
                        break;

                    case &#039;URI&#039;:
                        $res .= &quot;\n/S /URI\n/URI (&quot;;
                        if ($this-&gt;encrypted) {
                            $res .= $this-&gt;filterText($this-&gt;ARC4($o[&#039;info&#039;]), false, false);
                        } else {
                            $res .= $this-&gt;filterText($o[&#039;info&#039;], false, false);
                        }

                        $res .= &quot;)&quot;;
                        break;
                }

                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * an annotation object, this will add an annotation to the current page.
     * initially will support just link annotations
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_annotation($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                // add the annotation to the current page
                $pageId = $this-&gt;currentPage;
                $this-&gt;o_page($pageId, &#039;annot&#039;, $id);

                // and add the action object which is going to be required
                switch ($options[&#039;type&#039;]) {
                    case &#039;link&#039;:
                        $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;annotation&#039;, &#039;info&#039; =&gt; $options];
                        $this-&gt;numObj++;
                        $this-&gt;o_action($this-&gt;numObj, &#039;new&#039;, $options[&#039;url&#039;]);
                        $this-&gt;objects[$id][&#039;info&#039;][&#039;actionId&#039;] = $this-&gt;numObj;
                        break;

                    case &#039;ilink&#039;:
                        // this is to a named internal link
                        $label = $options[&#039;label&#039;];
                        $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;annotation&#039;, &#039;info&#039; =&gt; $options];
                        $this-&gt;numObj++;
                        $this-&gt;o_action($this-&gt;numObj, &#039;new&#039;, [&#039;type&#039; =&gt; &#039;ilink&#039;, &#039;label&#039; =&gt; $label]);
                        $this-&gt;objects[$id][&#039;info&#039;][&#039;actionId&#039;] = $this-&gt;numObj;
                        break;
                }
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Annot&quot;;
                switch ($o[&#039;info&#039;][&#039;type&#039;]) {
                    case &#039;link&#039;:
                    case &#039;ilink&#039;:
                        $res .= &quot;\n/Subtype /Link&quot;;
                        break;
                }
                $res .= &quot;\n/A &quot; . $o[&#039;info&#039;][&#039;actionId&#039;] . &quot; 0 R&quot;;
                $res .= &quot;\n/Border [0 0 0]&quot;;
                $res .= &quot;\n/H /I&quot;;
                $res .= &quot;\n/Rect [ &quot;;

                foreach ($o[&#039;info&#039;][&#039;rect&#039;] as $v) {
                    $res .= sprintf(&quot;%.4F &quot;, $v);
                }

                $res .= &quot;]&quot;;
                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * a page object, it also creates a contents object to hold its contents
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_page($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;numPages++;
                $this-&gt;objects[$id] = [
                    &#039;t&#039;    =&gt; &#039;page&#039;,
                    &#039;info&#039; =&gt; [
                        &#039;parent&#039;  =&gt; $this-&gt;currentNode,
                        &#039;pageNum&#039; =&gt; $this-&gt;numPages,
                        &#039;mediaBox&#039; =&gt; $this-&gt;objects[$this-&gt;currentNode][&#039;info&#039;][&#039;mediaBox&#039;]
                    ]
                ];

                if (is_array($options)) {
                    // then this must be a page insertion, array should contain &#039;rid&#039;,&#039;pos&#039;=[before|after]
                    $options[&#039;id&#039;] = $id;
                    $this-&gt;o_pages($this-&gt;currentNode, &#039;page&#039;, $options);
                } else {
                    $this-&gt;o_pages($this-&gt;currentNode, &#039;page&#039;, $id);
                }

                $this-&gt;currentPage = $id;
                //make a contents object to go with this page
                $this-&gt;numObj++;
                $this-&gt;o_contents($this-&gt;numObj, &#039;new&#039;, $id);
                $this-&gt;currentContents = $this-&gt;numObj;
                $this-&gt;objects[$id][&#039;info&#039;][&#039;contents&#039;] = [];
                $this-&gt;objects[$id][&#039;info&#039;][&#039;contents&#039;][] = $this-&gt;numObj;

                $match = ($this-&gt;numPages % 2 ? &#039;odd&#039; : &#039;even&#039;);
                foreach ($this-&gt;addLooseObjects as $oId =&gt; $target) {
                    if ($target === &#039;all&#039; || $match === $target) {
                        $this-&gt;objects[$id][&#039;info&#039;][&#039;contents&#039;][] = $oId;
                    }
                }
                break;

            case &#039;content&#039;:
                $o[&#039;info&#039;][&#039;contents&#039;][] = $options;
                break;

            case &#039;annot&#039;:
                // add an annotation to this page
                if (!isset($o[&#039;info&#039;][&#039;annot&#039;])) {
                    $o[&#039;info&#039;][&#039;annot&#039;] = [];
                }

                // $options should contain the id of the annotation dictionary
                $o[&#039;info&#039;][&#039;annot&#039;][] = $options;
                break;

            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Page&quot;;
                if (isset($o[&#039;info&#039;][&#039;mediaBox&#039;])) {
                    $tmp = $o[&#039;info&#039;][&#039;mediaBox&#039;];
                    $res .= &quot;\n/MediaBox [&quot; . sprintf(
                            &#039;%.3F %.3F %.3F %.3F&#039;,
                            $tmp[0],
                            $tmp[1],
                            $tmp[2],
                            $tmp[3]
                        ) . &#039;]&#039;;
                }
                $res .= &quot;\n/Parent &quot; . $o[&#039;info&#039;][&#039;parent&#039;] . &quot; 0 R&quot;;

                if (isset($o[&#039;info&#039;][&#039;annot&#039;])) {
                    $res .= &quot;\n/Annots [&quot;;
                    foreach ($o[&#039;info&#039;][&#039;annot&#039;] as $aId) {
                        $res .= &quot; $aId 0 R&quot;;
                    }
                    $res .= &quot; ]&quot;;
                }

                $count = count($o[&#039;info&#039;][&#039;contents&#039;]);
                if ($count == 1) {
                    $res .= &quot;\n/Contents &quot; . $o[&#039;info&#039;][&#039;contents&#039;][0] . &quot; 0 R&quot;;
                } else {
                    if ($count &gt; 1) {
                        $res .= &quot;\n/Contents [\n&quot;;

                        // reverse the page contents so added objects are below normal content
                        //foreach (array_reverse($o[&#039;info&#039;][&#039;contents&#039;]) as $cId) {
                        // Back to normal now that I&#039;ve got transparency working --Benj
                        foreach ($o[&#039;info&#039;][&#039;contents&#039;] as $cId) {
                            $res .= &quot;$cId 0 R\n&quot;;
                        }
                        $res .= &quot;]&quot;;
                    }
                }

                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * the contents objects hold all of the content which appears on pages
     *
     * @param $id
     * @param $action
     * @param string|array $options
     * @return null|string
     */
    protected function o_contents($id, $action, $options = &#039;&#039;)
    {
        if ($action !== &#039;new&#039;) {
            $o = &amp;$this-&gt;objects[$id];
        }

        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;contents&#039;, &#039;c&#039; =&gt; &#039;&#039;, &#039;info&#039; =&gt; []];
                if (mb_strlen($options, &#039;8bit&#039;) &amp;&amp; intval($options)) {
                    // then this contents is the primary for a page
                    $this-&gt;objects[$id][&#039;onPage&#039;] = $options;
                } else {
                    if ($options === &#039;raw&#039;) {
                        // then this page contains some other type of system object
                        $this-&gt;objects[$id][&#039;raw&#039;] = 1;
                    }
                }
                break;

            case &#039;add&#039;:
                // add more options to the declaration
                foreach ($options as $k =&gt; $v) {
                    $o[&#039;info&#039;][$k] = $v;
                }

            case &#039;out&#039;:
                $tmp = $o[&#039;c&#039;];
                $res = &quot;\n$id 0 obj\n&quot;;

                if (isset($this-&gt;objects[$id][&#039;raw&#039;])) {
                    $res .= $tmp;
                } else {
                    $res .= &quot;&lt;&lt;&quot;;
                    if ($this-&gt;compressionReady &amp;&amp; $this-&gt;options[&#039;compression&#039;]) {
                        // then implement ZLIB based compression on this content stream
                        $res .= &quot; /Filter /FlateDecode&quot;;
                        $tmp = gzcompress($tmp, 6);
                    }

                    if ($this-&gt;encrypted) {
                        $this-&gt;encryptInit($id);
                        $tmp = $this-&gt;ARC4($tmp);
                    }

                    foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                        $res .= &quot;\n/$k $v&quot;;
                    }

                    $res .= &quot;\n/Length &quot; . mb_strlen($tmp, &#039;8bit&#039;) . &quot; &gt;&gt;\nstream\n$tmp\nendstream&quot;;
                }

                $res .= &quot;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * @param $id
     * @param $action
     * @return string|null
     */
    protected function o_embedjs($id, $action)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [
                    &#039;t&#039;    =&gt; &#039;embedjs&#039;,
                    &#039;info&#039; =&gt; [
                        &#039;Names&#039; =&gt; &#039;[(EmbeddedJS) &#039; . ($id + 1) . &#039; 0 R]&#039;
                    ]
                ];
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt; &quot;;
                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    $res .= &quot;\n/$k $v&quot;;
                }
                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * @param $id
     * @param $action
     * @param string $code
     * @return null|string
     */
    protected function o_javascript($id, $action, $code = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [
                    &#039;t&#039;    =&gt; &#039;javascript&#039;,
                    &#039;info&#039; =&gt; [
                        &#039;S&#039;  =&gt; &#039;/JavaScript&#039;,
                        &#039;JS&#039; =&gt; &#039;(&#039; . $this-&gt;filterText($code, true, false) . &#039;)&#039;,
                    ]
                ];
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt; &quot;;

                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    $res .= &quot;\n/$k $v&quot;;
                }
                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * an image object, will be an XObject in the document, includes description and data
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_image($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                // make the new object
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;image&#039;, &#039;data&#039; =&gt; &amp;$options[&#039;data&#039;], &#039;info&#039; =&gt; []];

                $info =&amp; $this-&gt;objects[$id][&#039;info&#039;];

                $info[&#039;Type&#039;] = &#039;/XObject&#039;;
                $info[&#039;Subtype&#039;] = &#039;/Image&#039;;
                $info[&#039;Width&#039;] = $options[&#039;iw&#039;];
                $info[&#039;Height&#039;] = $options[&#039;ih&#039;];

                if (isset($options[&#039;masked&#039;]) &amp;&amp; $options[&#039;masked&#039;]) {
                    $info[&#039;SMask&#039;] = ($this-&gt;numObj - 1) . &#039; 0 R&#039;;
                }

                if (!isset($options[&#039;type&#039;]) || $options[&#039;type&#039;] === &#039;jpg&#039;) {
                    if (!isset($options[&#039;channels&#039;])) {
                        $options[&#039;channels&#039;] = 3;
                    }

                    switch ($options[&#039;channels&#039;]) {
                        case 1:
                            $info[&#039;ColorSpace&#039;] = &#039;/DeviceGray&#039;;
                            break;
                        case 4:
                            $info[&#039;ColorSpace&#039;] = &#039;/DeviceCMYK&#039;;
                            break;
                        default:
                            $info[&#039;ColorSpace&#039;] = &#039;/DeviceRGB&#039;;
                            break;
                    }

                    if ($info[&#039;ColorSpace&#039;] === &#039;/DeviceCMYK&#039;) {
                        $info[&#039;Decode&#039;] = &#039;[1 0 1 0 1 0 1 0]&#039;;
                    }

                    $info[&#039;Filter&#039;] = &#039;/DCTDecode&#039;;
                    $info[&#039;BitsPerComponent&#039;] = 8;
                } else {
                    if ($options[&#039;type&#039;] === &#039;png&#039;) {
                        $info[&#039;Filter&#039;] = &#039;/FlateDecode&#039;;
                        $info[&#039;DecodeParms&#039;] = &#039;&lt;&lt; /Predictor 15 /Colors &#039; . $options[&#039;ncolor&#039;] . &#039; /Columns &#039; . $options[&#039;iw&#039;] . &#039; /BitsPerComponent &#039; . $options[&#039;bitsPerComponent&#039;] . &#039;&gt;&gt;&#039;;

                        if ($options[&#039;isMask&#039;]) {
                            $info[&#039;ColorSpace&#039;] = &#039;/DeviceGray&#039;;
                        } else {
                            if (mb_strlen($options[&#039;pdata&#039;], &#039;8bit&#039;)) {
                                $tmp = &#039; [ /Indexed /DeviceRGB &#039; . (mb_strlen($options[&#039;pdata&#039;], &#039;8bit&#039;) / 3 - 1) . &#039; &#039;;
                                $this-&gt;numObj++;
                                $this-&gt;o_contents($this-&gt;numObj, &#039;new&#039;);
                                $this-&gt;objects[$this-&gt;numObj][&#039;c&#039;] = $options[&#039;pdata&#039;];
                                $tmp .= $this-&gt;numObj . &#039; 0 R&#039;;
                                $tmp .= &#039; ]&#039;;
                                $info[&#039;ColorSpace&#039;] = $tmp;

                                if (isset($options[&#039;transparency&#039;])) {
                                    $transparency = $options[&#039;transparency&#039;];
                                    switch ($transparency[&#039;type&#039;]) {
                                        case &#039;indexed&#039;:
                                            $tmp = &#039; [ &#039; . $transparency[&#039;data&#039;] . &#039; &#039; . $transparency[&#039;data&#039;] . &#039;] &#039;;
                                            $info[&#039;Mask&#039;] = $tmp;
                                            break;

                                        case &#039;color-key&#039;:
                                            $tmp = &#039; [ &#039; .
                                                $transparency[&#039;r&#039;] . &#039; &#039; . $transparency[&#039;r&#039;] .
                                                $transparency[&#039;g&#039;] . &#039; &#039; . $transparency[&#039;g&#039;] .
                                                $transparency[&#039;b&#039;] . &#039; &#039; . $transparency[&#039;b&#039;] .
                                                &#039; ] &#039;;
                                            $info[&#039;Mask&#039;] = $tmp;
                                            break;
                                    }
                                }
                            } else {
                                if (isset($options[&#039;transparency&#039;])) {
                                    $transparency = $options[&#039;transparency&#039;];

                                    switch ($transparency[&#039;type&#039;]) {
                                        case &#039;indexed&#039;:
                                            $tmp = &#039; [ &#039; . $transparency[&#039;data&#039;] . &#039; &#039; . $transparency[&#039;data&#039;] . &#039;] &#039;;
                                            $info[&#039;Mask&#039;] = $tmp;
                                            break;

                                        case &#039;color-key&#039;:
                                            $tmp = &#039; [ &#039; .
                                                $transparency[&#039;r&#039;] . &#039; &#039; . $transparency[&#039;r&#039;] . &#039; &#039; .
                                                $transparency[&#039;g&#039;] . &#039; &#039; . $transparency[&#039;g&#039;] . &#039; &#039; .
                                                $transparency[&#039;b&#039;] . &#039; &#039; . $transparency[&#039;b&#039;] .
                                                &#039; ] &#039;;
                                            $info[&#039;Mask&#039;] = $tmp;
                                            break;
                                    }
                                }
                                $info[&#039;ColorSpace&#039;] = &#039;/&#039; . $options[&#039;color&#039;];
                            }
                        }

                        $info[&#039;BitsPerComponent&#039;] = $options[&#039;bitsPerComponent&#039;];
                    }
                }

                // assign it a place in the named resource dictionary as an external object, according to
                // the label passed in with it.
                $this-&gt;o_pages($this-&gt;currentNode, &#039;xObject&#039;, [&#039;label&#039; =&gt; $options[&#039;label&#039;], &#039;objNum&#039; =&gt; $id]);

                // also make sure that we have the right procset object for it.
                $this-&gt;o_procset($this-&gt;procsetObjectId, &#039;add&#039;, &#039;ImageC&#039;);
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];
                $tmp = &amp;$o[&#039;data&#039;];
                $res = &quot;\n$id 0 obj\n&lt;&lt;&quot;;

                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    $res .= &quot;\n/$k $v&quot;;
                }

                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                    $tmp = $this-&gt;ARC4($tmp);
                }

                $res .= &quot;\n/Length &quot; . mb_strlen($tmp, &#039;8bit&#039;) . &quot;&gt;&gt;\nstream\n$tmp\nendstream\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * graphics state object
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_extGState($id, $action, $options = &quot;&quot;)
    {
        static $valid_params = [
            &quot;LW&quot;,
            &quot;LC&quot;,
            &quot;LC&quot;,
            &quot;LJ&quot;,
            &quot;ML&quot;,
            &quot;D&quot;,
            &quot;RI&quot;,
            &quot;OP&quot;,
            &quot;op&quot;,
            &quot;OPM&quot;,
            &quot;Font&quot;,
            &quot;BG&quot;,
            &quot;BG2&quot;,
            &quot;UCR&quot;,
            &quot;TR&quot;,
            &quot;TR2&quot;,
            &quot;HT&quot;,
            &quot;FL&quot;,
            &quot;SM&quot;,
            &quot;SA&quot;,
            &quot;BM&quot;,
            &quot;SMask&quot;,
            &quot;CA&quot;,
            &quot;ca&quot;,
            &quot;AIS&quot;,
            &quot;TK&quot;
        ];

        switch ($action) {
            case &quot;new&quot;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;extGState&#039;, &#039;info&#039; =&gt; $options];

                // Tell the pages about the new resource
                $this-&gt;numStates++;
                $this-&gt;o_pages($this-&gt;currentNode, &#039;extGState&#039;, [&quot;objNum&quot; =&gt; $id, &quot;stateNum&quot; =&gt; $this-&gt;numStates]);
                break;

            case &quot;out&quot;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /ExtGState\n&quot;;

                foreach ($o[&quot;info&quot;] as $k =&gt; $v) {
                    if (!in_array($k, $valid_params)) {
                        continue;
                    }
                    $res .= &quot;/$k $v\n&quot;;
                }

                $res .= &quot;&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * @param integer $id
     * @param string $action
     * @param mixed $options
     * @return string
     */
    protected function o_xobject($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;xobject&#039;, &#039;info&#039; =&gt; $options, &#039;c&#039; =&gt; &#039;&#039;];
                break;

            case &#039;procset&#039;:
                $this-&gt;objects[$id][&#039;procset&#039;] = $options;
                break;

            case &#039;font&#039;:
                $this-&gt;objects[$id][&#039;fonts&#039;][$options[&#039;fontNum&#039;]] = [
                  &#039;objNum&#039; =&gt; $options[&#039;objNum&#039;],
                  &#039;fontNum&#039; =&gt; $options[&#039;fontNum&#039;]
                ];
                break;

            case &#039;xObject&#039;:
                $this-&gt;objects[$id][&#039;xObjects&#039;][] = [&#039;objNum&#039; =&gt; $options[&#039;objNum&#039;], &#039;label&#039; =&gt; $options[&#039;label&#039;]];
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /XObject\n&quot;;

                foreach ($o[&quot;info&quot;] as $k =&gt; $v) {
                    switch ($k) {
                        case &#039;Subtype&#039;:
                            $res .= &quot;/Subtype /$v\n&quot;;
                            break;
                        case &#039;bbox&#039;:
                            $res .= &quot;/BBox [&quot;;
                            foreach ($v as $value) {
                                $res .= sprintf(&quot;%.4F &quot;, $value);
                            }
                            $res .= &quot;]\n&quot;;
                            break;
                        default:
                            $res .= &quot;/$k $v\n&quot;;
                            break;
                    }
                }
                $res .= &quot;/Matrix[1.0 0.0 0.0 1.0 0.0 0.0]\n&quot;;

                $res .= &quot;/Resources &lt;&lt;&quot;;
                if (isset($o[&#039;procset&#039;])) {
                    $res .= &quot;\n/ProcSet &quot; . $o[&#039;procset&#039;] . &quot; 0 R&quot;;
                } else {
                    $res .= &quot;\n/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]&quot;;
                }
                if (isset($o[&#039;fonts&#039;]) &amp;&amp; count($o[&#039;fonts&#039;])) {
                    $res .= &quot;\n/Font &lt;&lt; &quot;;
                    foreach ($o[&#039;fonts&#039;] as $finfo) {
                        $res .= &quot;\n/F&quot; . $finfo[&#039;fontNum&#039;] . &quot; &quot; . $finfo[&#039;objNum&#039;] . &quot; 0 R&quot;;
                    }
                    $res .= &quot;\n&gt;&gt;&quot;;
                }
                if (isset($o[&#039;xObjects&#039;]) &amp;&amp; count($o[&#039;xObjects&#039;])) {
                    $res .= &quot;\n/XObject &lt;&lt; &quot;;
                    foreach ($o[&#039;xObjects&#039;] as $finfo) {
                        $res .= &quot;\n/&quot; . $finfo[&#039;label&#039;] . &quot; &quot; . $finfo[&#039;objNum&#039;] . &quot; 0 R&quot;;
                    }
                    $res .= &quot;\n&gt;&gt;&quot;;
                }
                $res .= &quot;\n&gt;&gt;\n&quot;;

                $tmp = $o[&quot;c&quot;];
                if ($this-&gt;compressionReady &amp;&amp; $this-&gt;options[&#039;compression&#039;]) {
                    // then implement ZLIB based compression on this content stream
                    $res .= &quot; /Filter /FlateDecode\n&quot;;
                    $tmp = gzcompress($tmp, 6);
                }

                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                    $tmp = $this-&gt;ARC4($tmp);
                }

                $res .= &quot;/Length &quot; . mb_strlen($tmp, &#039;8bit&#039;) . &quot; &gt;&gt;\n&quot;;
                $res .= &quot;stream\n&quot; . $tmp . &quot;\nendstream&quot; . &quot;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_acroform($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &quot;new&quot;:
                $this-&gt;o_catalog($this-&gt;catalogId, &#039;acroform&#039;, $id);
                $this-&gt;objects[$id] = array(&#039;t&#039; =&gt; &#039;acroform&#039;, &#039;info&#039; =&gt; $options);
                break;

            case &#039;addfield&#039;:
                $this-&gt;objects[$id][&#039;info&#039;][&#039;Fields&#039;][] = $options;
                break;

            case &#039;font&#039;:
                $this-&gt;objects[$id][&#039;fonts&#039;][$options[&#039;fontNum&#039;]] = [
                  &#039;objNum&#039; =&gt; $options[&#039;objNum&#039;],
                  &#039;fontNum&#039; =&gt; $options[&#039;fontNum&#039;]
                ];
                break;

            case &quot;out&quot;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt;&quot;;

                foreach ($o[&quot;info&quot;] as $k =&gt; $v) {
                    switch ($k) {
                        case &#039;Fields&#039;:
                            $res .= &quot; /Fields [&quot;;
                            foreach ($v as $i) {
                                $res .= &quot;$i 0 R &quot;;
                            }
                            $res .= &quot;]\n&quot;;
                            break;
                        default:
                            $res .= &quot;/$k $v\n&quot;;
                    }
                }

                $res .= &quot;/DR &lt;&lt;\n&quot;;
                if (isset($o[&#039;fonts&#039;]) &amp;&amp; count($o[&#039;fonts&#039;])) {
                    $res .= &quot;/Font &lt;&lt; \n&quot;;
                    foreach ($o[&#039;fonts&#039;] as $finfo) {
                        $res .= &quot;/F&quot; . $finfo[&#039;fontNum&#039;] . &quot; &quot; . $finfo[&#039;objNum&#039;] . &quot; 0 R\n&quot;;
                    }
                    $res .= &quot;&gt;&gt;\n&quot;;
                }
                $res .= &quot;&gt;&gt;\n&quot;;

                $res .= &quot;&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * @param $id
     * @param $action
     * @param mixed $options
     * @return null|string
     */
    protected function o_field($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &quot;new&quot;:
                $this-&gt;o_page($options[&#039;pageid&#039;], &#039;annot&#039;, $id);
                $this-&gt;o_acroform($this-&gt;acroFormId, &#039;addfield&#039;, $id);
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;field&#039;, &#039;info&#039; =&gt; $options];
                break;

            case &#039;set&#039;:
                $this-&gt;objects[$id][&#039;info&#039;] = array_merge($this-&gt;objects[$id][&#039;info&#039;], $options);
                break;

            case &quot;out&quot;:
                $o = &amp;$this-&gt;objects[$id];
                $res = &quot;\n$id 0 obj\n&lt;&lt; /Type /Annot /Subtype /Widget \n&quot;;

                $encrypted = $this-&gt;encrypted;
                if ($encrypted) {
                    $this-&gt;encryptInit($id);
                }

                foreach ($o[&quot;info&quot;] as $k =&gt; $v) {
                    switch ($k) {
                        case &#039;pageid&#039;:
                            $res .= &quot;/P $v 0 R\n&quot;;
                            break;
                        case &#039;value&#039;:
                            if ($encrypted) {
                                $v = $this-&gt;filterText($this-&gt;ARC4($v), false, false);
                            }
                            $res .= &quot;/V ($v)\n&quot;;
                            break;
                        case &#039;refvalue&#039;:
                            $res .= &quot;/V $v 0 R\n&quot;;
                            break;
                        case &#039;da&#039;:
                            if ($encrypted) {
                                $v = $this-&gt;filterText($this-&gt;ARC4($v), false, false);
                            }
                            $res .= &quot;/DA ($v)\n&quot;;
                            break;
                        case &#039;options&#039;:
                            $res .= &quot;/Opt [\n&quot;;
                            foreach ($v as $opt) {
                                if ($encrypted) {
                                    $opt = $this-&gt;filterText($this-&gt;ARC4($opt), false, false);
                                }
                                $res .= &quot;($opt)\n&quot;;
                            }
                            $res .= &quot;]\n&quot;;
                            break;
                        case &#039;rect&#039;:
                            $res .= &quot;/Rect [&quot;;
                            foreach ($v as $value) {
                                $res .= sprintf(&quot;%.4F &quot;, $value);
                            }
                            $res .= &quot;]\n&quot;;
                            break;
                        case &#039;appearance&#039;:
                            $res .= &quot;/AP &lt;&lt; &quot;;
                            foreach ($v as $a =&gt; $ref) {
                                $res .= &quot;/$a $ref 0 R &quot;;
                            }
                            $res .= &quot;&gt;&gt;\n&quot;;
                            break;
                        case &#039;T&#039;:
                            if ($encrypted) {
                                $v = $this-&gt;filterText($this-&gt;ARC4($v), false, false);
                            }
                            $res .= &quot;/T ($v)\n&quot;;
                            break;
                        default:
                            $res .= &quot;/$k $v\n&quot;;
                    }

                }

                $res .= &quot;&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return null|string
     */
    protected function o_sig($id, $action, $options = &#039;&#039;)
    {
        $sign_maxlen = $this-&gt;signatureMaxLen;

        switch ($action) {
            case &quot;new&quot;:
                $this-&gt;objects[$id] = array(&#039;t&#039; =&gt; &#039;sig&#039;, &#039;info&#039; =&gt; $options);
                $this-&gt;byteRange[$id] = [&#039;t&#039; =&gt; &#039;sig&#039;];
                break;

            case &#039;byterange&#039;:
                $o = &amp;$this-&gt;objects[$id];
                $content =&amp; $options[&#039;content&#039;];
                $content_len = strlen($content);
                $pos = strpos($content, sprintf(&quot;/ByteRange [ %&#039;.010d&quot;, $id));
                $len = strlen(&#039;/ByteRange [ ********** ********** ********** ********** ]&#039;);
                $rangeStartPos = $pos + $len + 1 + 10; // before &#039;&lt;&#039;
                $content = substr_replace($content, str_pad(sprintf(&#039;/ByteRange [ 0 %u %u %u ]&#039;, $rangeStartPos, $rangeStartPos + $sign_maxlen + 2, $content_len - 2 - $sign_maxlen - $rangeStartPos), $len, &#039; &#039;, STR_PAD_RIGHT), $pos, $len);

                $fuid = uniqid();
                $tmpInput = $this-&gt;tmp . &quot;/pkcs7.tmp.&quot; . $fuid . &#039;.in&#039;;
                $tmpOutput = $this-&gt;tmp . &quot;/pkcs7.tmp.&quot; . $fuid . &#039;.out&#039;;

                if (file_put_contents($tmpInput, substr($content, 0, $rangeStartPos)) === false) {
                    throw new \Exception(&quot;Unable to write temporary file for signing.&quot;);
                }
                if (file_put_contents($tmpInput, substr($content, $rangeStartPos + 2 + $sign_maxlen),
                    FILE_APPEND) === false) {
                    throw new \Exception(&quot;Unable to write temporary file for signing.&quot;);
                }

                if (openssl_pkcs7_sign($tmpInput, $tmpOutput,
                    $o[&#039;info&#039;][&#039;SignCert&#039;],
                    array($o[&#039;info&#039;][&#039;PrivKey&#039;], $o[&#039;info&#039;][&#039;Password&#039;]),
                    array(), PKCS7_BINARY | PKCS7_DETACHED) === false) {
                    throw new \Exception(&quot;Failed to prepare signature.&quot;);
                }

                $signature = file_get_contents($tmpOutput);

                unlink($tmpInput);
                unlink($tmpOutput);

                $sign = substr($signature, (strpos($signature, &quot;%%EOF\n\n------&quot;) + 13));
                list($head, $signature) = explode(&quot;\n\n&quot;, $sign);

                $signature = base64_decode(trim($signature));

                $signature = current(unpack(&#039;H*&#039;, $signature));
                $signature = str_pad($signature, $sign_maxlen, &#039;0&#039;);
                $siglen = strlen($signature);
                if (strlen($signature) &gt; $sign_maxlen) {
                    throw new \Exception(&quot;Signature length ($siglen) exceeds the $sign_maxlen limit.&quot;);
                }

                $content = substr_replace($content, $signature, $rangeStartPos + 1, $sign_maxlen);
                break;

            case &quot;out&quot;:
                $res = &quot;\n$id 0 obj\n&lt;&lt;\n&quot;;

                $encrypted = $this-&gt;encrypted;
                if ($encrypted) {
                    $this-&gt;encryptInit($id);
                }

                $res .= &quot;/ByteRange &quot; .sprintf(&quot;[ %&#039;.010d ********** ********** ********** ]\n&quot;, $id);
                $res .= &quot;/Contents &lt;&quot; . str_pad(&#039;&#039;, $sign_maxlen, &#039;0&#039;) . &quot;&gt;\n&quot;;
                $res .= &quot;/Filter/Adobe.PPKLite\n&quot;; //PPKMS \n&quot;;
                $res .= &quot;/Type/Sig/SubFilter/adbe.pkcs7.detached \n&quot;;

                $date = &quot;D:&quot; . substr_replace(date(&#039;YmdHisO&#039;), &#039;\&#039;&#039;, -2, 0) . &#039;\&#039;&#039;;
                if ($encrypted) {
                    $date = $this-&gt;ARC4($date);
                }

                $res .= &quot;/M ($date)\n&quot;;
                $res .= &quot;/Prop_Build &lt;&lt; /App &lt;&lt; /Name /DomPDF &gt;&gt; /Filter &lt;&lt; /Name /Adobe.PPKLite &gt;&gt; &gt;&gt;\n&quot;;

                $o = &amp;$this-&gt;objects[$id];
                foreach ($o[&#039;info&#039;] as $k =&gt; $v) {
                    switch ($k) {
                        case &#039;Name&#039;:
                        case &#039;Location&#039;:
                        case &#039;Reason&#039;:
                        case &#039;ContactInfo&#039;:
                            if ($v !== null &amp;&amp; $v !== &#039;&#039;) {
                                $res .= &quot;/$k (&quot; .
                                  ($encrypted ? $this-&gt;filterText($this-&gt;ARC4($v), false, false) : $v) . &quot;) \n&quot;;
                            }
                            break;
                    }
                }
                $res .= &quot;&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * encryption object.
     *
     * @param $id
     * @param $action
     * @param string $options
     * @return string|null
     */
    protected function o_encryption($id, $action, $options = &#039;&#039;)
    {
        switch ($action) {
            case &#039;new&#039;:
                // make the new object
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;encryption&#039;, &#039;info&#039; =&gt; $options];
                $this-&gt;arc4_objnum = $id;
                break;

            case &#039;keys&#039;:
                // figure out the additional parameters required
                $pad = chr(0x28) . chr(0xBF) . chr(0x4E) . chr(0x5E) . chr(0x4E) . chr(0x75) . chr(0x8A) . chr(0x41)
                    . chr(0x64) . chr(0x00) . chr(0x4E) . chr(0x56) . chr(0xFF) . chr(0xFA) . chr(0x01) . chr(0x08)
                    . chr(0x2E) . chr(0x2E) . chr(0x00) . chr(0xB6) . chr(0xD0) . chr(0x68) . chr(0x3E) . chr(0x80)
                    . chr(0x2F) . chr(0x0C) . chr(0xA9) . chr(0xFE) . chr(0x64) . chr(0x53) . chr(0x69) . chr(0x7A);

                $info = $this-&gt;objects[$id][&#039;info&#039;];

                $len = mb_strlen($info[&#039;owner&#039;], &#039;8bit&#039;);

                if ($len &gt; 32) {
                    $owner = substr($info[&#039;owner&#039;], 0, 32);
                } else {
                    if ($len &lt; 32) {
                        $owner = $info[&#039;owner&#039;] . substr($pad, 0, 32 - $len);
                    } else {
                        $owner = $info[&#039;owner&#039;];
                    }
                }

                $len = mb_strlen($info[&#039;user&#039;], &#039;8bit&#039;);
                if ($len &gt; 32) {
                    $user = substr($info[&#039;user&#039;], 0, 32);
                } else {
                    if ($len &lt; 32) {
                        $user = $info[&#039;user&#039;] . substr($pad, 0, 32 - $len);
                    } else {
                        $user = $info[&#039;user&#039;];
                    }
                }

                $tmp = $this-&gt;md5_16($owner);
                $okey = substr($tmp, 0, 5);
                $this-&gt;ARC4_init($okey);
                $ovalue = $this-&gt;ARC4($user);
                $this-&gt;objects[$id][&#039;info&#039;][&#039;O&#039;] = $ovalue;

                // now make the u value, phew.
                $tmp = $this-&gt;md5_16(
                    $user . $ovalue . chr($info[&#039;p&#039;]) . chr(255) . chr(255) . chr(255) . hex2bin($this-&gt;fileIdentifier)
                );

                $ukey = substr($tmp, 0, 5);
                $this-&gt;ARC4_init($ukey);
                $this-&gt;encryptionKey = $ukey;
                $this-&gt;encrypted = true;
                $uvalue = $this-&gt;ARC4($pad);
                $this-&gt;objects[$id][&#039;info&#039;][&#039;U&#039;] = $uvalue;
                // initialize the arc4 array
                break;

            case &#039;out&#039;:
                $o = &amp;$this-&gt;objects[$id];

                $res = &quot;\n$id 0 obj\n&lt;&lt;&quot;;
                $res .= &quot;\n/Filter /Standard&quot;;
                $res .= &quot;\n/V 1&quot;;
                $res .= &quot;\n/R 2&quot;;
                $res .= &quot;\n/O (&quot; . $this-&gt;filterText($o[&#039;info&#039;][&#039;O&#039;], false, false) . &#039;)&#039;;
                $res .= &quot;\n/U (&quot; . $this-&gt;filterText($o[&#039;info&#039;][&#039;U&#039;], false, false) . &#039;)&#039;;
                // and the p-value needs to be converted to account for the twos-complement approach
                $o[&#039;info&#039;][&#039;p&#039;] = (($o[&#039;info&#039;][&#039;p&#039;] ^ 255) + 1) * -1;
                $res .= &quot;\n/P &quot; . ($o[&#039;info&#039;][&#039;p&#039;]);
                $res .= &quot;\n&gt;&gt;\nendobj&quot;;

                return $res;
        }

        return null;
    }

    protected function o_indirect_references($id, $action, $options = null)
    {
        switch ($action) {
            case &#039;new&#039;:
            case &#039;add&#039;:
                if ($id === 0) {
                    $id = ++$this-&gt;numObj;
                    $this-&gt;o_catalog($this-&gt;catalogId, &#039;names&#039;, $id);
                    $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;indirect_references&#039;, &#039;info&#039; =&gt; $options];
                    $this-&gt;indirectReferenceId = $id;
                } else {
                    $this-&gt;objects[$id][&#039;info&#039;] = array_merge($this-&gt;objects[$id][&#039;info&#039;], $options);
                }
                break;
            case &#039;out&#039;:
                $res = &quot;\n$id 0 obj &lt;&lt; &quot;;

                foreach ($this-&gt;objects[$id][&#039;info&#039;] as $referenceObjName =&gt; $referenceObjId) {
                    $res .= &quot;/$referenceObjName $referenceObjId 0 R &quot;;
                }

                $res .= &quot;&gt;&gt; endobj&quot;;
                return $res;
        }

        return null;
    }

    protected function o_names($id, $action, $options = null)
    {
        switch ($action) {
            case &#039;new&#039;:
            case &#039;add&#039;:
                if ($id === 0) {
                    $id = ++$this-&gt;numObj;
                    $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;names&#039;, &#039;info&#039; =&gt; [$options]];
                    $this-&gt;o_indirect_references($this-&gt;indirectReferenceId, &#039;add&#039;, [&#039;EmbeddedFiles&#039; =&gt; $id]);
                    $this-&gt;embeddedFilesId = $id;
                } else {
                    $this-&gt;objects[$id][&#039;info&#039;][] = $options;
                }
                break;
            case &#039;out&#039;:
                $info = &amp;$this-&gt;objects[$id][&#039;info&#039;];
                $res = &#039;&#039;;
                if (count($info) &gt; 0) {
                    $res = &quot;\n$id 0 obj &lt;&lt; /Names [ &quot;;

                    if ($this-&gt;encrypted) {
                        $this-&gt;encryptInit($id);
                    }

                    foreach ($info as $entry) {
                        if ($this-&gt;encrypted) {
                            $filename = $this-&gt;ARC4($entry[&#039;filename&#039;]);
                        } else {
                            $filename = $entry[&#039;filename&#039;];
                        }

                        $res .= &quot;($filename) &quot; . $entry[&#039;dict_reference&#039;] . &quot; 0 R &quot;;
                    }

                    $res .= &quot;] &gt;&gt; endobj&quot;;
                }
                return $res;
        }

        return null;
    }

    protected function o_embedded_file_dictionary($id, $action, $options = null)
    {
        switch ($action) {
            case &#039;new&#039;:
                $embeddedFileId = ++$this-&gt;numObj;
                $options[&#039;embedded_reference&#039;] = $embeddedFileId;
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;embedded_file_dictionary&#039;, &#039;info&#039; =&gt; $options];
                $this-&gt;o_embedded_file($embeddedFileId, &#039;new&#039;, $options);
                $options[&#039;dict_reference&#039;] = $id;
                $this-&gt;o_names($this-&gt;embeddedFilesId, &#039;add&#039;, $options);
                break;
            case &#039;out&#039;:
                $info = &amp;$this-&gt;objects[$id][&#039;info&#039;];
                $filename = $this-&gt;utf8toUtf16BE($info[&#039;filename&#039;]);
                $description = $this-&gt;utf8toUtf16BE($info[&#039;description&#039;]);

                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                    $filename = $this-&gt;ARC4($filename);
                    $description = $this-&gt;ARC4($description);
                }

                $filename = $this-&gt;filterText($filename, false, false);
                $description = $this-&gt;filterText($description, false, false);

                $res = &quot;\n$id 0 obj &lt;&lt;/Type /Filespec /EF&quot;;
                $res .= &quot; &lt;&lt;/F &quot; . $info[&#039;embedded_reference&#039;] . &quot; 0 R &gt;&gt;&quot;;
                $res .= &quot; /F ($filename) /UF ($filename) /Desc ($description)&quot;;
                $res .= &quot; &gt;&gt; endobj&quot;;
                return $res;
        }

        return null;
    }

    protected function o_embedded_file($id, $action, $options = null): ?string
    {
        switch ($action) {
            case &#039;new&#039;:
                $this-&gt;objects[$id] = [&#039;t&#039; =&gt; &#039;embedded_file&#039;, &#039;info&#039; =&gt; $options];
                break;
            case &#039;out&#039;:
                $info = &amp;$this-&gt;objects[$id][&#039;info&#039;];

                if ($this-&gt;compressionReady) {
                    $filepath = $info[&#039;filepath&#039;];
                    $checksum = md5_file($filepath);
                    $f = fopen($filepath, &quot;rb&quot;);

                    $file_content_compressed = &#039;&#039;;
                    $deflateContext = deflate_init(ZLIB_ENCODING_DEFLATE, [&#039;level&#039; =&gt; 6]);
                    while (($block = fread($f, 8192))) {
                        $file_content_compressed .= deflate_add($deflateContext, $block, ZLIB_NO_FLUSH);
                    }
                    $file_content_compressed .= deflate_add($deflateContext, &#039;&#039;, ZLIB_FINISH);
                    $file_size_uncompressed = ftell($f);
                    fclose($f);
                } else {
                    $file_content = file_get_contents($info[&#039;filepath&#039;]);
                    $file_size_uncompressed = mb_strlen($file_content, &#039;8bit&#039;);
                    $checksum = md5($file_content);
                }

                if ($this-&gt;encrypted) {
                    $this-&gt;encryptInit($id);
                    $checksum = $this-&gt;ARC4($checksum);
                    $file_content_compressed = $this-&gt;ARC4($file_content_compressed);
                }
                $file_size_compressed = mb_strlen($file_content_compressed, &#039;8bit&#039;);

                $res = &quot;\n$id 0 obj &lt;&lt;/Params &lt;&lt;/Size $file_size_uncompressed /CheckSum ($checksum) &gt;&gt;&quot; .
                    &quot; /Type/EmbeddedFile /Filter/FlateDecode&quot; .
                    &quot; /Length $file_size_compressed &gt;&gt; stream\n$file_content_compressed\nendstream\nendobj&quot;;

                return $res;
        }

        return null;
    }

    /**
     * ARC4 functions
     * A series of function to implement ARC4 encoding in PHP
     */

    /**
     * calculate the 16 byte version of the 128 bit md5 digest of the string
     *
     * @param $string
     * @return string
     */
    function md5_16($string)
    {
        $tmp = md5($string);
        $out = &#039;&#039;;
        for ($i = 0; $i &lt;= 30; $i = $i + 2) {
            $out .= chr(hexdec(substr($tmp, $i, 2)));
        }

        return $out;
    }

    /**
     * initialize the encryption for processing a particular object
     *
     * @param $id
     */
    function encryptInit($id)
    {
        $tmp = $this-&gt;encryptionKey;
        $hex = dechex($id);
        if (mb_strlen($hex, &#039;8bit&#039;) &lt; 6) {
            $hex = substr(&#039;000000&#039;, 0, 6 - mb_strlen($hex, &#039;8bit&#039;)) . $hex;
        }
        $tmp .= chr(hexdec(substr($hex, 4, 2)))
            . chr(hexdec(substr($hex, 2, 2)))
            . chr(hexdec(substr($hex, 0, 2)))
            . chr(0)
            . chr(0)
        ;
        $key = $this-&gt;md5_16($tmp);
        $this-&gt;ARC4_init(substr($key, 0, 10));
    }

    /**
     * initialize the ARC4 encryption
     *
     * @param string $key
     */
    function ARC4_init($key = &#039;&#039;)
    {
        $this-&gt;arc4 = &#039;&#039;;

        // setup the control array
        if (mb_strlen($key, &#039;8bit&#039;) == 0) {
            return;
        }

        $k = &#039;&#039;;
        while (mb_strlen($k, &#039;8bit&#039;) &lt; 256) {
            $k .= $key;
        }

        $k = substr($k, 0, 256);
        for ($i = 0; $i &lt; 256; $i++) {
            $this-&gt;arc4 .= chr($i);
        }

        $j = 0;

        for ($i = 0; $i &lt; 256; $i++) {
            $t = $this-&gt;arc4[$i];
            $j = ($j + ord($t) + ord($k[$i])) % 256;
            $this-&gt;arc4[$i] = $this-&gt;arc4[$j];
            $this-&gt;arc4[$j] = $t;
        }
    }

    /**
     * ARC4 encrypt a text string
     *
     * @param $text
     * @return string
     */
    function ARC4($text)
    {
        $len = mb_strlen($text, &#039;8bit&#039;);
        $a = 0;
        $b = 0;
        $c = $this-&gt;arc4;
        $out = &#039;&#039;;
        for ($i = 0; $i &lt; $len; $i++) {
            $a = ($a + 1) % 256;
            $t = $c[$a];
            $b = ($b + ord($t)) % 256;
            $c[$a] = $c[$b];
            $c[$b] = $t;
            $k = ord($c[(ord($c[$a]) + ord($c[$b])) % 256]);
            $out .= chr(ord($text[$i]) ^ $k);
        }

        return $out;
    }

    /**
     * functions which can be called to adjust or add to the document
     */

    /**
     * add a link in the document to an external URL
     *
     * @param $url
     * @param $x0
     * @param $y0
     * @param $x1
     * @param $y1
     */
    function addLink($url, $x0, $y0, $x1, $y1)
    {
        $this-&gt;numObj++;
        $info = [&#039;type&#039; =&gt; &#039;link&#039;, &#039;url&#039; =&gt; $url, &#039;rect&#039; =&gt; [$x0, $y0, $x1, $y1]];
        $this-&gt;o_annotation($this-&gt;numObj, &#039;new&#039;, $info);
    }

    /**
     * add a link in the document to an internal destination (ie. within the document)
     *
     * @param $label
     * @param $x0
     * @param $y0
     * @param $x1
     * @param $y1
     */
    function addInternalLink($label, $x0, $y0, $x1, $y1)
    {
        $this-&gt;numObj++;
        $info = [&#039;type&#039; =&gt; &#039;ilink&#039;, &#039;label&#039; =&gt; $label, &#039;rect&#039; =&gt; [$x0, $y0, $x1, $y1]];
        $this-&gt;o_annotation($this-&gt;numObj, &#039;new&#039;, $info);
    }

    /**
     * set the encryption of the document
     * can be used to turn it on and/or set the passwords which it will have.
     * also the functions that the user will have are set here, such as print, modify, add
     *
     * @param string $userPass
     * @param string $ownerPass
     * @param array $pc
     */
    function setEncryption($userPass = &#039;&#039;, $ownerPass = &#039;&#039;, $pc = [])
    {
        $p = bindec(&quot;11000000&quot;);

        $options = [&#039;print&#039; =&gt; 4, &#039;modify&#039; =&gt; 8, &#039;copy&#039; =&gt; 16, &#039;add&#039; =&gt; 32];

        foreach ($pc as $k =&gt; $v) {
            if ($v &amp;&amp; isset($options[$k])) {
                $p += $options[$k];
            } else {
                if (isset($options[$v])) {
                    $p += $options[$v];
                }
            }
        }

        // implement encryption on the document
        if ($this-&gt;arc4_objnum == 0) {
            // then the block does not exist already, add it.
            $this-&gt;numObj++;
            if (mb_strlen($ownerPass) == 0) {
                $ownerPass = $userPass;
            }

            $this-&gt;o_encryption($this-&gt;numObj, &#039;new&#039;, [&#039;user&#039; =&gt; $userPass, &#039;owner&#039; =&gt; $ownerPass, &#039;p&#039; =&gt; $p]);
        }
    }

    /**
     * should be used for internal checks, not implemented as yet
     */
    function checkAllHere()
    {
    }

    /**
     * return the pdf stream as a string returned from the function
     *
     * @param bool $debug
     * @return string
     */
    function output($debug = false)
    {
        if ($debug) {
            // turn compression off
            $this-&gt;options[&#039;compression&#039;] = false;
        }

        if ($this-&gt;javascript) {
            $this-&gt;numObj++;

            $js_id = $this-&gt;numObj;
            $this-&gt;o_embedjs($js_id, &#039;new&#039;);
            $this-&gt;o_javascript(++$this-&gt;numObj, &#039;new&#039;, $this-&gt;javascript);

            $id = $this-&gt;catalogId;

            $this-&gt;o_indirect_references($this-&gt;indirectReferenceId, &#039;add&#039;, [&#039;JavaScript&#039; =&gt; $js_id]);
        }

        if ($this-&gt;fileIdentifier === &#039;&#039;) {
            $tmp = implode(&#039;&#039;, $this-&gt;objects[$this-&gt;infoObject][&#039;info&#039;]);
            $this-&gt;fileIdentifier = md5(&#039;DOMPDF&#039; . __FILE__ . $tmp . microtime() . mt_rand());
        }

        if ($this-&gt;arc4_objnum) {
            $this-&gt;o_encryption($this-&gt;arc4_objnum, &#039;keys&#039;);
            $this-&gt;ARC4_init($this-&gt;encryptionKey);
        }

        $this-&gt;checkAllHere();

        $xref = [];
        $content = &#039;%PDF-&#039; . self::PDF_VERSION;
        $pos = mb_strlen($content, &#039;8bit&#039;);

        // pre-process o_font objects before output of all objects
        foreach ($this-&gt;objects as $k =&gt; $v) {
            if ($v[&#039;t&#039;] === &#039;font&#039;) {
                $this-&gt;o_font($k, &#039;add&#039;);
            }
        }

        foreach ($this-&gt;objects as $k =&gt; $v) {
            $tmp = &#039;o_&#039; . $v[&#039;t&#039;];
            $cont = $this-&gt;$tmp($k, &#039;out&#039;);
            $content .= $cont;
            $xref[] = $pos + 1; //+1 to account for \n at the start of each object
            $pos += mb_strlen($cont, &#039;8bit&#039;);
        }

        $content .= &quot;\nxref\n0 &quot; . (count($xref) + 1) . &quot;\n0000000000 65535 f \n&quot;;

        foreach ($xref as $p) {
            $content .= str_pad($p, 10, &quot;0&quot;, STR_PAD_LEFT) . &quot; 00000 n \n&quot;;
        }

        $content .= &quot;trailer\n&lt;&lt;\n&quot; .
            &#039;/Size &#039; . (count($xref) + 1) . &quot;\n&quot; .
            &#039;/Root 1 0 R&#039; . &quot;\n&quot; .
            &#039;/Info &#039; . $this-&gt;infoObject . &quot; 0 R\n&quot;
        ;

        // if encryption has been applied to this document then add the marker for this dictionary
        if ($this-&gt;arc4_objnum &gt; 0) {
            $content .= &#039;/Encrypt &#039; . $this-&gt;arc4_objnum . &quot; 0 R\n&quot;;
        }

        $content .= &#039;/ID[&lt;&#039; . $this-&gt;fileIdentifier . &#039;&gt;&lt;&#039; . $this-&gt;fileIdentifier . &quot;&gt;]\n&quot;;

        // account for \n added at start of xref table
        $pos++;

        $content .= &quot;&gt;&gt;\nstartxref\n$pos\n%%EOF\n&quot;;

        if (count($this-&gt;byteRange) &gt; 0) {
            foreach ($this-&gt;byteRange as $k =&gt; $v) {
                $tmp = &#039;o_&#039; . $v[&#039;t&#039;];
                $this-&gt;$tmp($k, &#039;byterange&#039;, [&#039;content&#039; =&gt; &amp;$content]);
            }
        }

        return $content;
    }

    /**
     * initialize a new document
     * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum
     * this function is called automatically by the constructor function
     *
     * @param array $pageSize
     */
    private function newDocument($pageSize = [0, 0, 612, 792])
    {
        $this-&gt;numObj = 0;
        $this-&gt;objects = [];

        $this-&gt;numObj++;
        $this-&gt;o_catalog($this-&gt;numObj, &#039;new&#039;);

        $this-&gt;numObj++;
        $this-&gt;o_outlines($this-&gt;numObj, &#039;new&#039;);

        $this-&gt;numObj++;
        $this-&gt;o_pages($this-&gt;numObj, &#039;new&#039;);

        $this-&gt;o_pages($this-&gt;numObj, &#039;mediaBox&#039;, $pageSize);
        $this-&gt;currentNode = 3;

        $this-&gt;numObj++;
        $this-&gt;o_procset($this-&gt;numObj, &#039;new&#039;);

        $this-&gt;numObj++;
        $this-&gt;o_info($this-&gt;numObj, &#039;new&#039;);

        $this-&gt;numObj++;
        $this-&gt;o_page($this-&gt;numObj, &#039;new&#039;);

        // need to store the first page id as there is no way to get it to the user during
        // startup
        $this-&gt;firstPageId = $this-&gt;currentContents;
    }

    /**
     * open the font file and return a php structure containing it.
     * first check if this one has been done before and saved in a form more suited to php
     * note that if a php serialized version does not exist it will try and make one, but will
     * require write access to the directory to do it... it is MUCH faster to have these serialized
     * files.
     *
     * @param $font
     */
    private function openFont($font)
    {
        // assume that $font contains the path and file but not the extension
        $name = basename($font);
        $dir = dirname($font);

        $fontcache = $this-&gt;fontcache;
        if ($fontcache == &#039;&#039;) {
            $fontcache = $dir;
        }

        //$name       filename without folder and extension of font metrics
        //$dir        folder of font metrics
        //$fontcache  folder of runtime created php serialized version of font metrics.
        //            If this is not given, the same folder as the font metrics will be used.
        //            Storing and reusing serialized versions improves speed much

        $this-&gt;addMessage(&quot;openFont: $font - $name&quot;);

        if (!$this-&gt;isUnicode || in_array(mb_strtolower(basename($name)), self::$coreFonts)) {
            $metrics_name = &quot;$name.afm&quot;;
        } else {
            $metrics_name = &quot;$name.ufm&quot;;
        }

        $cache_name = &quot;$metrics_name.json&quot;;
        $this-&gt;addMessage(&quot;metrics: $metrics_name, cache: $cache_name&quot;);

        if (file_exists($fontcache . &#039;/&#039; . $cache_name)) {
            $this-&gt;addMessage(&quot;openFont: json metrics file exists $fontcache/$cache_name&quot;);
            $cached_font_info = json_decode(file_get_contents($fontcache . &#039;/&#039; . $cache_name), true);
            if (!isset($cached_font_info[&#039;_version_&#039;]) || $cached_font_info[&#039;_version_&#039;] != $this-&gt;fontcacheVersion) {
                $this-&gt;addMessage(&#039;openFont: font cache is out of date, regenerating&#039;);
            } else {
                $this-&gt;fonts[$font] = $cached_font_info;
            }
        }

        if (!isset($this-&gt;fonts[$font]) &amp;&amp; file_exists(&quot;$dir/$metrics_name&quot;)) {
            // then rebuild the php_&lt;font&gt;.afm file from the &lt;font&gt;.afm file
            $this-&gt;addMessage(&quot;openFont: build php file from $dir/$metrics_name&quot;);
            $data = [];

            // 20 =&gt; &#039;space&#039;
            $data[&#039;codeToName&#039;] = [];

            // Since we&#039;re not going to enable Unicode for the core fonts we need to use a font-based
            // setting for Unicode support rather than a global setting.
            $data[&#039;isUnicode&#039;] = (strtolower(substr($metrics_name, -3)) !== &#039;afm&#039;);

            $cidtogid = &#039;&#039;;
            if ($data[&#039;isUnicode&#039;]) {
                $cidtogid = str_pad(&#039;&#039;, 256 * 256 * 2, &quot;\x00&quot;);
            }

            $file = file(&quot;$dir/$metrics_name&quot;);

            foreach ($file as $rowA) {
                $row = trim($rowA);
                $pos = strpos($row, &#039; &#039;);

                if ($pos) {
                    // then there must be some keyword
                    $key = substr($row, 0, $pos);
                    switch ($key) {
                        case &#039;FontName&#039;:
                        case &#039;FullName&#039;:
                        case &#039;FamilyName&#039;:
                        case &#039;PostScriptName&#039;:
                        case &#039;Weight&#039;:
                        case &#039;ItalicAngle&#039;:
                        case &#039;IsFixedPitch&#039;:
                        case &#039;CharacterSet&#039;:
                        case &#039;UnderlinePosition&#039;:
                        case &#039;UnderlineThickness&#039;:
                        case &#039;Version&#039;:
                        case &#039;EncodingScheme&#039;:
                        case &#039;CapHeight&#039;:
                        case &#039;XHeight&#039;:
                        case &#039;Ascender&#039;:
                        case &#039;Descender&#039;:
                        case &#039;StdHW&#039;:
                        case &#039;StdVW&#039;:
                        case &#039;StartCharMetrics&#039;:
                        case &#039;FontHeightOffset&#039;: // OAR - Added so we can offset the height calculation of a Windows font.  Otherwise it&#039;s too big.
                            $data[$key] = trim(substr($row, $pos));
                            break;

                        case &#039;FontBBox&#039;:
                            $data[$key] = explode(&#039; &#039;, trim(substr($row, $pos)));
                            break;

                        //C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ;
                        case &#039;C&#039;: // Found in AFM files
                            $bits = explode(&#039;;&#039;, trim($row));
                            $dtmp = [&#039;C&#039; =&gt; null, &#039;N&#039; =&gt; null, &#039;WX&#039; =&gt; null, &#039;B&#039; =&gt; []];

                            foreach ($bits as $bit) {
                                $bits2 = explode(&#039; &#039;, trim($bit));
                                if (mb_strlen($bits2[0], &#039;8bit&#039;) == 0) {
                                    continue;
                                }

                                if (count($bits2) &gt; 2) {
                                    $dtmp[$bits2[0]] = [];
                                    for ($i = 1; $i &lt; count($bits2); $i++) {
                                        $dtmp[$bits2[0]][] = $bits2[$i];
                                    }
                                } else {
                                    if (count($bits2) == 2) {
                                        $dtmp[$bits2[0]] = $bits2[1];
                                    }
                                }
                            }

                            $c = (int)$dtmp[&#039;C&#039;];
                            $n = $dtmp[&#039;N&#039;];
                            $width = floatval($dtmp[&#039;WX&#039;]);

                            if ($c &gt;= 0) {
                                if (!ctype_xdigit($n) || $c != hexdec($n)) {
                                    $data[&#039;codeToName&#039;][$c] = $n;
                                }
                                $data[&#039;C&#039;][$c] = $width;
                            } elseif (isset($n)) {
                                $data[&#039;C&#039;][$n] = $width;
                            }

                            if (!isset($data[&#039;MissingWidth&#039;]) &amp;&amp; $c === -1 &amp;&amp; $n === &#039;.notdef&#039;) {
                                $data[&#039;MissingWidth&#039;] = $width;
                            }

                            break;

                        // U 827 ; WX 0 ; N squaresubnosp ; G 675 ;
                        case &#039;U&#039;: // Found in UFM files
                            if (!$data[&#039;isUnicode&#039;]) {
                                break;
                            }

                            $bits = explode(&#039;;&#039;, trim($row));
                            $dtmp = [&#039;G&#039; =&gt; null, &#039;N&#039; =&gt; null, &#039;U&#039; =&gt; null, &#039;WX&#039; =&gt; null];

                            foreach ($bits as $bit) {
                                $bits2 = explode(&#039; &#039;, trim($bit));
                                if (mb_strlen($bits2[0], &#039;8bit&#039;) === 0) {
                                    continue;
                                }

                                if (count($bits2) &gt; 2) {
                                    $dtmp[$bits2[0]] = [];
                                    for ($i = 1; $i &lt; count($bits2); $i++) {
                                        $dtmp[$bits2[0]][] = $bits2[$i];
                                    }
                                } else {
                                    if (count($bits2) == 2) {
                                        $dtmp[$bits2[0]] = $bits2[1];
                                    }
                                }
                            }

                            $c = (int)$dtmp[&#039;U&#039;];
                            $n = $dtmp[&#039;N&#039;];
                            $glyph = $dtmp[&#039;G&#039;];
                            $width = floatval($dtmp[&#039;WX&#039;]);

                            if ($c &gt;= 0) {
                                // Set values in CID to GID map
                                if ($c &gt;= 0 &amp;&amp; $c &lt; 0xFFFF &amp;&amp; $glyph) {
                                    $cidtogid[$c * 2] = chr($glyph &gt;&gt; 8);
                                    $cidtogid[$c * 2 + 1] = chr($glyph &amp; 0xFF);
                                }

                                if (!ctype_xdigit($n) || $c != hexdec($n)) {
                                    $data[&#039;codeToName&#039;][$c] = $n;
                                }
                                $data[&#039;C&#039;][$c] = $width;
                            } elseif (isset($n)) {
                                $data[&#039;C&#039;][$n] = $width;
                            }

                            if (!isset($data[&#039;MissingWidth&#039;]) &amp;&amp; $c === -1 &amp;&amp; $n === &#039;.notdef&#039;) {
                                $data[&#039;MissingWidth&#039;] = $width;
                            }

                            break;

                        case &#039;KPX&#039;:
                            break; // don&#039;t include them as they are not used yet
                            //KPX Adieresis yacute -40
                            /*$bits = explode(&#039; &#039;, trim($row));
                            $data[&#039;KPX&#039;][$bits[1]][$bits[2]] = $bits[3];
                            break;*/
                    }
                }
            }

            if ($this-&gt;compressionReady &amp;&amp; $this-&gt;options[&#039;compression&#039;]) {
                // then implement ZLIB based compression on CIDtoGID string
                $data[&#039;CIDtoGID_Compressed&#039;] = true;
                $cidtogid = gzcompress($cidtogid, 6);
            }
            $data[&#039;CIDtoGID&#039;] = base64_encode($cidtogid);
            $data[&#039;_version_&#039;] = $this-&gt;fontcacheVersion;
            $this-&gt;fonts[$font] = $data;

            //Because of potential trouble with php safe mode, expect that the folder already exists.
            //If not existing, this will hit performance because of missing cached results.
            if (is_dir($fontcache) &amp;&amp; is_writable($fontcache)) {
                file_put_contents(&quot;$fontcache/$cache_name&quot;, json_encode($data, JSON_PRETTY_PRINT));
            }
            $data = null;
        }

        if (!isset($this-&gt;fonts[$font])) {
            $this-&gt;addMessage(&quot;openFont: no font file found for $font. Do you need to run load_font.php?&quot;);
        }
    }

    /**
     * if the font is not loaded then load it and make the required object
     * else just make it the current font
     * the encoding array can contain &#039;encoding&#039;=&gt; &#039;none&#039;,&#039;WinAnsiEncoding&#039;,&#039;MacRomanEncoding&#039; or &#039;MacExpertEncoding&#039;
     * note that encoding=&#039;none&#039; will need to be used for symbolic fonts
     * and &#039;differences&#039; =&gt; an array of mappings between numbers 0-&gt;255 and character names.
     *
     * @param string $fontName
     * @param string $encoding
     * @param bool $set
     * @param bool $isSubsetting
     * @return int
     * @throws FontNotFoundException
     */
    function selectFont($fontName, $encoding = &#039;&#039;, $set = true, $isSubsetting = true)
    {
        $fontName = (string) $fontName;
        $ext = substr($fontName, -4);
        if ($ext === &#039;.afm&#039; || $ext === &#039;.ufm&#039;) {
            $fontName = substr($fontName, 0, mb_strlen($fontName) - 4);
        }
        if ($fontName === &#039;&#039;) {
            return $this-&gt;currentFontNum;
        }

        if (!isset($this-&gt;fonts[$fontName])) {
            $this-&gt;addMessage(&quot;selectFont: selecting - $fontName - $encoding, $set&quot;);

            // load the file
            $this-&gt;openFont($fontName);

            if (isset($this-&gt;fonts[$fontName])) {
                $this-&gt;numObj++;
                $this-&gt;numFonts++;

                $font = &amp;$this-&gt;fonts[$fontName];

                $name = basename($fontName);
                $options = [&#039;name&#039; =&gt; $name, &#039;fontFileName&#039; =&gt; $fontName, &#039;isSubsetting&#039; =&gt; $isSubsetting];

                if (is_array($encoding)) {
                    // then encoding and differences might be set
                    if (isset($encoding[&#039;encoding&#039;])) {
                        $options[&#039;encoding&#039;] = $encoding[&#039;encoding&#039;];
                    }

                    if (isset($encoding[&#039;differences&#039;])) {
                        $options[&#039;differences&#039;] = $encoding[&#039;differences&#039;];
                    }
                } else {
                    if (mb_strlen($encoding, &#039;8bit&#039;)) {
                        // then perhaps only the encoding has been set
                        $options[&#039;encoding&#039;] = $encoding;
                    }
                }

                $this-&gt;o_font($this-&gt;numObj, &#039;new&#039;, $options);

                if (file_exists(&quot;$fontName.ttf&quot;)) {
                    $fileSuffix = &#039;ttf&#039;;
                } elseif (file_exists(&quot;$fontName.TTF&quot;)) {
                    $fileSuffix = &#039;TTF&#039;;
                } elseif (file_exists(&quot;$fontName.pfb&quot;)) {
                    $fileSuffix = &#039;pfb&#039;;
                } elseif (file_exists(&quot;$fontName.PFB&quot;)) {
                    $fileSuffix = &#039;PFB&#039;;
                } else {
                    $fileSuffix = &#039;&#039;;
                }

                $font[&#039;fileSuffix&#039;] = $fileSuffix;

                $font[&#039;fontNum&#039;] = $this-&gt;numFonts;
                $font[&#039;isSubsetting&#039;] = $isSubsetting &amp;&amp; $font[&#039;isUnicode&#039;] &amp;&amp; strtolower($fileSuffix) === &#039;ttf&#039;;

                // also set the differences here, note that this means that these will take effect only the
                //first time that a font is selected, else they are ignored
                if (isset($options[&#039;differences&#039;])) {
                    $font[&#039;differences&#039;] = $options[&#039;differences&#039;];
                }
            }
        }

        if ($set &amp;&amp; isset($this-&gt;fonts[$fontName])) {
            // so if for some reason the font was not set in the last one then it will not be selected
            $this-&gt;currentBaseFont = $fontName;

            // the next lines mean that if a new font is selected, then the current text state will be
            // applied to it as well.
            $this-&gt;currentFont = $this-&gt;currentBaseFont;
            $this-&gt;currentFontNum = $this-&gt;fonts[$this-&gt;currentFont][&#039;fontNum&#039;];
        }

        return $this-&gt;currentFontNum;
    }

    /**
     * sets up the current font, based on the font families, and the current text state
     * note that this system is quite flexible, a bold-italic font can be completely different to a
     * italic-bold font, and even bold-bold will have to be defined within the family to have meaning
     * This function is to be called whenever the currentTextState is changed, it will update
     * the currentFont setting to whatever the appropriate family one is.
     * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
     * This function will change the currentFont to whatever it should be, but will not change the
     * currentBaseFont.
     */
    private function setCurrentFont()
    {
        //   if (strlen($this-&gt;currentBaseFont) == 0){
        //     // then assume an initial font
        //     $this-&gt;selectFont($this-&gt;defaultFont);
        //   }
        //   $cf = substr($this-&gt;currentBaseFont,strrpos($this-&gt;currentBaseFont,&#039;/&#039;)+1);
        //   if (strlen($this-&gt;currentTextState)
        //     &amp;&amp; isset($this-&gt;fontFamilies[$cf])
        //       &amp;&amp; isset($this-&gt;fontFamilies[$cf][$this-&gt;currentTextState])){
        //     // then we are in some state or another
        //     // and this font has a family, and the current setting exists within it
        //     // select the font, then return it
        //     $nf = substr($this-&gt;currentBaseFont,0,strrpos($this-&gt;currentBaseFont,&#039;/&#039;)+1).$this-&gt;fontFamilies[$cf][$this-&gt;currentTextState];
        //     $this-&gt;selectFont($nf,&#039;&#039;,0);
        //     $this-&gt;currentFont = $nf;
        //     $this-&gt;currentFontNum = $this-&gt;fonts[$nf][&#039;fontNum&#039;];
        //   } else {
        //     // the this font must not have the right family member for the current state
        //     // simply assume the base font
        $this-&gt;currentFont = $this-&gt;currentBaseFont;
        $this-&gt;currentFontNum = $this-&gt;fonts[$this-&gt;currentFont][&#039;fontNum&#039;];
        //  }
    }

    /**
     * function for the user to find out what the ID is of the first page that was created during
     * startup - useful if they wish to add something to it later.
     *
     * @return int
     */
    function getFirstPageId()
    {
        return $this-&gt;firstPageId;
    }

    /**
     * add content to the currently active object
     *
     * @param $content
     */
    private function addContent($content)
    {
        $this-&gt;objects[$this-&gt;currentContents][&#039;c&#039;] .= $content;
    }

    /**
     * sets the color for fill operations
     *
     * @param array $color
     * @param bool  $force
     */
    function setColor($color, $force = false)
    {
        $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];

        if (!$force &amp;&amp; $this-&gt;currentColor == $new_color) {
            return;
        }

        if (isset($new_color[3])) {
            $this-&gt;currentColor = $new_color;
            $this-&gt;addContent(vsprintf(&quot;\n%.3F %.3F %.3F %.3F k&quot;, $this-&gt;currentColor));
        } else {
            if (isset($new_color[2])) {
                $this-&gt;currentColor = $new_color;
                $this-&gt;addContent(vsprintf(&quot;\n%.3F %.3F %.3F rg&quot;, $this-&gt;currentColor));
            }
        }
    }

    /**
     * sets the color for fill operations
     *
     * @param string $fillRule
     */
    function setFillRule($fillRule)
    {
        if (!in_array($fillRule, [&quot;nonzero&quot;, &quot;evenodd&quot;])) {
            return;
        }

        $this-&gt;fillRule = $fillRule;
    }

    /**
     * sets the color for stroke operations
     *
     * @param array $color
     * @param bool  $force
     */
    function setStrokeColor($color, $force = false)
    {
        $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];

        if (!$force &amp;&amp; $this-&gt;currentStrokeColor == $new_color) {
            return;
        }

        if (isset($new_color[3])) {
            $this-&gt;currentStrokeColor = $new_color;
            $this-&gt;addContent(vsprintf(&quot;\n%.3F %.3F %.3F %.3F K&quot;, $this-&gt;currentStrokeColor));
        } else {
            if (isset($new_color[2])) {
                $this-&gt;currentStrokeColor = $new_color;
                $this-&gt;addContent(vsprintf(&quot;\n%.3F %.3F %.3F RG&quot;, $this-&gt;currentStrokeColor));
            }
        }
    }

    /**
     * Set the graphics state for compositions
     *
     * @param $parameters
     */
    function setGraphicsState($parameters)
    {
        // Create a new graphics state object if necessary
        if (($gstate = array_search($parameters, $this-&gt;gstates)) === false) {
            $this-&gt;numObj++;
            $this-&gt;o_extGState($this-&gt;numObj, &#039;new&#039;, $parameters);
            $gstate = $this-&gt;numStates;
            $this-&gt;gstates[$gstate] = $parameters;
        }
        $this-&gt;addContent(&quot;\n/GS$gstate gs&quot;);
    }

    /**
     * Set current blend mode &amp; opacity for lines.
     *
     * Valid blend modes are:
     *
     * Normal, Multiply, Screen, Overlay, Darken, Lighten,
     * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
     * Exclusion
     *
     * @param string $mode    The blend mode to use
     * @param float  $opacity 0.0 fully transparent, 1.0 fully opaque
     */
    public function setLineTransparency(string $mode, float $opacity): void
    {
        static $blendModes = [
            &quot;Normal&quot;,
            &quot;Multiply&quot;,
            &quot;Screen&quot;,
            &quot;Overlay&quot;,
            &quot;Darken&quot;,
            &quot;Lighten&quot;,
            &quot;ColorDogde&quot;,
            &quot;ColorBurn&quot;,
            &quot;HardLight&quot;,
            &quot;SoftLight&quot;,
            &quot;Difference&quot;,
            &quot;Exclusion&quot;
        ];

        if (!in_array($mode, $blendModes, true)) {
            $mode = &quot;Normal&quot;;
        }

        $newState = [
            &quot;mode&quot;    =&gt; $mode,
            &quot;opacity&quot; =&gt; $opacity
        ];

        if ($newState === $this-&gt;currentLineTransparency) {
            return;
        }

        $this-&gt;currentLineTransparency = $newState;

        $options = [
            &quot;BM&quot; =&gt; &quot;/$mode&quot;,
            &quot;CA&quot; =&gt; $opacity
        ];

        $this-&gt;setGraphicsState($options);
    }

    /**
     * Set current blend mode &amp; opacity for filled objects.
     *
     * Valid blend modes are:
     *
     * Normal, Multiply, Screen, Overlay, Darken, Lighten,
     * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
     * Exclusion
     *
     * @param string $mode    The blend mode to use
     * @param float  $opacity 0.0 fully transparent, 1.0 fully opaque
     */
    public function setFillTransparency(string $mode, float $opacity): void
    {
        static $blendModes = [
            &quot;Normal&quot;,
            &quot;Multiply&quot;,
            &quot;Screen&quot;,
            &quot;Overlay&quot;,
            &quot;Darken&quot;,
            &quot;Lighten&quot;,
            &quot;ColorDogde&quot;,
            &quot;ColorBurn&quot;,
            &quot;HardLight&quot;,
            &quot;SoftLight&quot;,
            &quot;Difference&quot;,
            &quot;Exclusion&quot;
        ];

        if (!in_array($mode, $blendModes, true)) {
            $mode = &quot;Normal&quot;;
        }

        $newState = [
            &quot;mode&quot;    =&gt; $mode,
            &quot;opacity&quot; =&gt; $opacity
        ];

        if ($newState === $this-&gt;currentFillTransparency) {
            return;
        }

        $this-&gt;currentFillTransparency = $newState;

        $options = [
            &quot;BM&quot; =&gt; &quot;/$mode&quot;,
            &quot;ca&quot; =&gt; $opacity,
        ];

        $this-&gt;setGraphicsState($options);
    }

    /**
     * draw a line from one set of coordinates to another
     *
     * @param float $x1
     * @param float $y1
     * @param float $x2
     * @param float $y2
     * @param bool  $stroke
     */
    function line($x1, $y1, $x2, $y2, $stroke = true)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F m %.3F %.3F l&quot;, $x1, $y1, $x2, $y2));

        if ($stroke) {
            $this-&gt;addContent(&#039; S&#039;);
        }
    }

    /**
     * draw a bezier curve based on 4 control points
     *
     * @param float $x0
     * @param float $y0
     * @param float $x1
     * @param float $y1
     * @param float $x2
     * @param float $y2
     * @param float $x3
     * @param float $y3
     */
    function curve($x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)
    {
        // in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points
        // as the control points for the curve.
        $this-&gt;addContent(
            sprintf(&quot;\n%.3F %.3F m %.3F %.3F %.3F %.3F %.3F %.3F c S&quot;, $x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)
        );
    }

    /**
     * draw a part of an ellipse
     *
     * @param float $x0
     * @param float $y0
     * @param float $astart
     * @param float $afinish
     * @param float $r1
     * @param float $r2
     * @param float $angle
     * @param int $nSeg
     */
    function partEllipse($x0, $y0, $astart, $afinish, $r1, $r2 = 0, $angle = 0, $nSeg = 8)
    {
        $this-&gt;ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, false);
    }

    /**
     * draw a filled ellipse
     *
     * @param float $x0
     * @param float $y0
     * @param float $r1
     * @param float $r2
     * @param float $angle
     * @param int $nSeg
     * @param float $astart
     * @param float $afinish
     */
    function filledEllipse($x0, $y0, $r1, $r2 = 0, $angle = 0, $nSeg = 8, $astart = 0, $afinish = 360)
    {
        $this-&gt;ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, true, true);
    }

    /**
     * @param float $x
     * @param float $y
     */
    function lineTo($x, $y)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F l&quot;, $x, $y));
    }

    /**
     * @param float $x
     * @param float $y
     */
    function moveTo($x, $y)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F m&quot;, $x, $y));
    }

    /**
     * draw a bezier curve based on 4 control points
     *
     * @param float $x1
     * @param float $y1
     * @param float $x2
     * @param float $y2
     * @param float $x3
     * @param float $y3
     */
    function curveTo($x1, $y1, $x2, $y2, $x3, $y3)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F %.3F %.3F %.3F %.3F c&quot;, $x1, $y1, $x2, $y2, $x3, $y3));
    }

    /**
     * draw a bezier curve based on 4 control points
     *
     * @param float $cpx
     * @param float $cpy
     * @param float $x
     * @param float $y
     */
    function quadTo($cpx, $cpy, $x, $y)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F %.3F %.3F v&quot;, $cpx, $cpy, $x, $y));
    }

    function closePath()
    {
        $this-&gt;addContent(&#039; h&#039;);
    }

    function endPath()
    {
        $this-&gt;addContent(&#039; n&#039;);
    }

    /**
     * draw an ellipse
     * note that the part and filled ellipse are just special cases of this function
     *
     * draws an ellipse in the current line style
     * centered at $x0,$y0, radii $r1,$r2
     * if $r2 is not set, then a circle is drawn
     * from $astart to $afinish, measured in degrees, running anti-clockwise from the right hand side of the ellipse.
     * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a
     * pretty crappy shape at 2, as we are approximating with bezier curves.
     *
     * @param float $x0
     * @param float $y0
     * @param float $r1
     * @param float $r2
     * @param float $angle
     * @param int   $nSeg
     * @param float $astart
     * @param float $afinish
     * @param bool  $close
     * @param bool  $fill
     * @param bool  $stroke
     * @param bool  $incomplete
     */
    function ellipse(
        $x0,
        $y0,
        $r1,
        $r2 = 0,
        $angle = 0,
        $nSeg = 8,
        $astart = 0,
        $afinish = 360,
        $close = true,
        $fill = false,
        $stroke = true,
        $incomplete = false
    ) {
        if ($r1 == 0) {
            return;
        }

        if ($r2 == 0) {
            $r2 = $r1;
        }

        if ($nSeg &lt; 2) {
            $nSeg = 2;
        }

        $astart = deg2rad((float)$astart);
        $afinish = deg2rad((float)$afinish);
        $totalAngle = $afinish - $astart;

        $dt = $totalAngle / $nSeg;
        $dtm = $dt / 3;

        if ($angle != 0) {
            $a = -1 * deg2rad((float)$angle);

            $this-&gt;addContent(
                sprintf(&quot;\n q %.3F %.3F %.3F %.3F %.3F %.3F cm&quot;, cos($a), -sin($a), sin($a), cos($a), $x0, $y0)
            );

            $x0 = 0;
            $y0 = 0;
        }

        $t1 = $astart;
        $a0 = $x0 + $r1 * cos($t1);
        $b0 = $y0 + $r2 * sin($t1);
        $c0 = -$r1 * sin($t1);
        $d0 = $r2 * cos($t1);

        if (!$incomplete) {
            $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F m &quot;, $a0, $b0));
        }

        for ($i = 1; $i &lt;= $nSeg; $i++) {
            // draw this bit of the total curve
            $t1 = $i * $dt + $astart;
            $a1 = $x0 + $r1 * cos($t1);
            $b1 = $y0 + $r2 * sin($t1);
            $c1 = -$r1 * sin($t1);
            $d1 = $r2 * cos($t1);

            $this-&gt;addContent(
                sprintf(
                    &quot;\n%.3F %.3F %.3F %.3F %.3F %.3F c&quot;,
                    ($a0 + $c0 * $dtm),
                    ($b0 + $d0 * $dtm),
                    ($a1 - $c1 * $dtm),
                    ($b1 - $d1 * $dtm),
                    $a1,
                    $b1
                )
            );

            $a0 = $a1;
            $b0 = $b1;
            $c0 = $c1;
            $d0 = $d1;
        }

        if (!$incomplete) {
            if ($fill) {
                $this-&gt;addContent(&#039; f&#039;);
            }

            if ($stroke) {
                if ($close) {
                    $this-&gt;addContent(&#039; s&#039;); // small &#039;s&#039; signifies closing the path as well
                } else {
                    $this-&gt;addContent(&#039; S&#039;);
                }
            }
        }

        if ($angle != 0) {
            $this-&gt;addContent(&#039; Q&#039;);
        }
    }

    /**
     * this sets the line drawing style.
     * width, is the thickness of the line in user units
     * cap is the type of cap to put on the line, values can be &#039;butt&#039;,&#039;round&#039;,&#039;square&#039;
     *    where the diffference between &#039;square&#039; and &#039;butt&#039; is that &#039;square&#039; projects a flat end past the
     *    end of the line.
     * join can be &#039;miter&#039;, &#039;round&#039;, &#039;bevel&#039;
     * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the
     *   on and off dashes.
     *   (2) represents 2 on, 2 off, 2 on , 2 off ...
     *   (2,1) is 2 on, 1 off, 2 on, 1 off.. etc
     * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.
     *
     * @param float  $width
     * @param string $cap
     * @param string $join
     * @param array  $dash
     * @param int    $phase
     */
    function setLineStyle($width = 1, $cap = &#039;&#039;, $join = &#039;&#039;, $dash = &#039;&#039;, $phase = 0)
    {
        // this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day
        $string = &#039;&#039;;

        if ($width &gt; 0) {
            $string .= &quot;$width w&quot;;
        }

        $ca = [&#039;butt&#039; =&gt; 0, &#039;round&#039; =&gt; 1, &#039;square&#039; =&gt; 2];

        if (isset($ca[$cap])) {
            $string .= &quot; $ca[$cap] J&quot;;
        }

        $ja = [&#039;miter&#039; =&gt; 0, &#039;round&#039; =&gt; 1, &#039;bevel&#039; =&gt; 2];

        if (isset($ja[$join])) {
            $string .= &quot; $ja[$join] j&quot;;
        }

        if (is_array($dash)) {
            $string .= &#039; [ &#039; . implode(&#039; &#039;, $dash) . &quot; ] $phase d&quot;;
        }

        if ($string === $this-&gt;currentLineStyle) {
            return;
        }

        $this-&gt;currentLineStyle = $string;
        $this-&gt;addContent(&quot;\n$string&quot;);
    }

    /**
     * draw a polygon, the syntax for this is similar to the GD polygon command
     *
     * @param float[] $p
     * @param bool    $fill
     */
    public function polygon(array $p, bool $fill = false): void
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F m &quot;, $p[0], $p[1]));

        $n = count($p);
        for ($i = 2; $i &lt; $n; $i = $i + 2) {
            $this-&gt;addContent(sprintf(&quot;%.3F %.3F l &quot;, $p[$i], $p[$i + 1]));
        }

        if ($fill) {
            $this-&gt;addContent(&#039; f&#039;);
        } else {
            $this-&gt;addContent(&#039; S&#039;);
        }
    }

    /**
     * a filled rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
     * the coordinates of the upper-right corner
     *
     * @param float $x1
     * @param float $y1
     * @param float $width
     * @param float $height
     */
    function filledRectangle($x1, $y1, $width, $height)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F %.3F %.3F re f&quot;, $x1, $y1, $width, $height));
    }

    /**
     * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
     * the coordinates of the upper-right corner
     *
     * @param float $x1
     * @param float $y1
     * @param float $width
     * @param float $height
     */
    function rectangle($x1, $y1, $width, $height)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F %.3F %.3F re S&quot;, $x1, $y1, $width, $height));
    }

    /**
     * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
     * the coordinates of the upper-right corner
     *
     * @param float $x1
     * @param float $y1
     * @param float $width
     * @param float $height
     */
    function rect($x1, $y1, $width, $height)
    {
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F %.3F %.3F re&quot;, $x1, $y1, $width, $height));
    }

    function stroke(bool $close = false)
    {
        $this-&gt;addContent(&quot;\n&quot; . ($close ? &quot;s&quot; : &quot;S&quot;));
    }

    function fill()
    {
        $this-&gt;addContent(&quot;\nf&quot; . ($this-&gt;fillRule === &quot;evenodd&quot; ? &quot;*&quot; : &quot;&quot;));
    }

    function fillStroke(bool $close = false)
    {
        $this-&gt;addContent(&quot;\n&quot; . ($close ? &quot;b&quot; : &quot;B&quot;) . ($this-&gt;fillRule === &quot;evenodd&quot; ? &quot;*&quot; : &quot;&quot;));
    }

    /**
     * @param string $subtype
     * @param integer $x
     * @param integer $y
     * @param integer $w
     * @param integer $h
     * @return int
     */
    function addXObject($subtype, $x, $y, $w, $h)
    {
        $id = ++$this-&gt;numObj;
        $this-&gt;o_xobject($id, &#039;new&#039;, [&#039;Subtype&#039; =&gt; $subtype, &#039;bbox&#039; =&gt; [$x, $y, $w, $h]]);
        return $id;
    }

    /**
     * @param integer $numXObject
     * @param string $type
     * @param array $options
     */
    function setXObjectResource($numXObject, $type, $options)
    {
        if (in_array($type, [&#039;procset&#039;, &#039;font&#039;, &#039;xObject&#039;])) {
            $this-&gt;o_xobject($numXObject, $type, $options);
        }
    }

    /**
     * add signature
     *
     * $fieldSigId = $cpdf-&gt;addFormField(Cpdf::ACROFORM_FIELD_SIG, &#039;Signature1&#039;, 0, 0, 0, 0, 0);
     *
     * $signatureId = $cpdf-&gt;addSignature([
     *   &#039;signcert&#039; =&gt; file_get_contents(&#039;dompdf.crt&#039;),
     *   &#039;privkey&#039; =&gt; file_get_contents(&#039;dompdf.key&#039;),
     *   &#039;password&#039; =&gt; &#039;password&#039;,
     *   &#039;name&#039; =&gt; &#039;DomPDF DEMO&#039;,
     *   &#039;location&#039; =&gt; &#039;Home&#039;,
     *   &#039;reason&#039; =&gt; &#039;First Form&#039;,
     *   &#039;contactinfo&#039; =&gt; &#039;info&#039;
     * ]);
     * $cpdf-&gt;setFormFieldValue($fieldSigId, &quot;$signatureId 0 R&quot;);
     *
     * @param string $signcert
     * @param string $privkey
     * @param string $password
     * @param string|null $name
     * @param string|null $location
     * @param string|null $reason
     * @param string|null $contactinfo
     * @return int
     */
    function addSignature($signcert, $privkey, $password = &#039;&#039;, $name = null, $location = null, $reason = null, $contactinfo = null) {
        $sigId = ++$this-&gt;numObj;
        $this-&gt;o_sig($sigId, &#039;new&#039;, [
          &#039;SignCert&#039; =&gt; $signcert,
          &#039;PrivKey&#039; =&gt; $privkey,
          &#039;Password&#039; =&gt; $password,
          &#039;Name&#039; =&gt; $name,
          &#039;Location&#039; =&gt; $location,
          &#039;Reason&#039; =&gt; $reason,
          &#039;ContactInfo&#039; =&gt; $contactinfo
        ]);

        return $sigId;
    }

    /**
     * add field to form
     *
     * @param string $type ACROFORM_FIELD_*
     * @param string $name
     * @param $x0
     * @param $y0
     * @param $x1
     * @param $y1
     * @param integer $ff Field Flag ACROFORM_FIELD_*_*
     * @param float $size
     * @param array $color
     * @return int
     */
    public function addFormField($type, $name, $x0, $y0, $x1, $y1, $ff = 0, $size = 10.0, $color = [0, 0, 0])
    {
        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        $color = implode(&#039; &#039;, $color) . &#039; rg&#039;;

        $currentFontNum = $this-&gt;currentFontNum;
        $font = array_filter(
            $this-&gt;objects[$this-&gt;currentNode][&#039;info&#039;][&#039;fonts&#039;],
            function ($item) use ($currentFontNum) { return $item[&#039;fontNum&#039;] == $currentFontNum; }
        );

        $this-&gt;o_acroform($this-&gt;acroFormId, &#039;font&#039;,
          [&#039;objNum&#039; =&gt; $font[0][&#039;objNum&#039;], &#039;fontNum&#039; =&gt; $font[0][&#039;fontNum&#039;]]);

        $fieldId = ++$this-&gt;numObj;
        $this-&gt;o_field($fieldId, &#039;new&#039;, [
          &#039;rect&#039; =&gt; [$x0, $y0, $x1, $y1],
          &#039;F&#039; =&gt; 4,
          &#039;FT&#039; =&gt; &quot;/$type&quot;,
          &#039;T&#039; =&gt; $name,
          &#039;Ff&#039; =&gt; $ff,
          &#039;pageid&#039; =&gt; $this-&gt;currentPage,
          &#039;da&#039; =&gt; &quot;$color /F$this-&gt;currentFontNum &quot; . sprintf(&#039;%.1F Tf &#039;, $size)
        ]);

        return $fieldId;
    }

    /**
     * set Field value
     *
     * @param integer $numFieldObj
     * @param string $value
     */
    public function setFormFieldValue($numFieldObj, $value)
    {
        $this-&gt;o_field($numFieldObj, &#039;set&#039;, [&#039;value&#039; =&gt; $value]);
    }

    /**
     * set Field value (reference)
     *
     * @param integer $numFieldObj
     * @param integer $numObj Object number
     */
    public function setFormFieldRefValue($numFieldObj, $numObj)
    {
        $this-&gt;o_field($numFieldObj, &#039;set&#039;, [&#039;refvalue&#039; =&gt; $numObj]);
    }

    /**
     * set Field Appearanc (reference)
     *
     * @param integer $numFieldObj
     * @param integer $normalNumObj
     * @param integer|null $rolloverNumObj
     * @param integer|null $downNumObj
     */
    public function setFormFieldAppearance($numFieldObj, $normalNumObj, $rolloverNumObj = null, $downNumObj = null)
    {
        $appearance[&#039;N&#039;] = $normalNumObj;

        if ($rolloverNumObj !== null) {
            $appearance[&#039;R&#039;] = $rolloverNumObj;
        }

        if ($downNumObj !== null) {
            $appearance[&#039;D&#039;] = $downNumObj;
        }

        $this-&gt;o_field($numFieldObj, &#039;set&#039;, [&#039;appearance&#039; =&gt; $appearance]);
    }

    /**
     * set Choice Field option values
     *
     * @param integer $numFieldObj
     * @param array $value
     */
    public function setFormFieldOpt($numFieldObj, $value)
    {
        $this-&gt;o_field($numFieldObj, &#039;set&#039;, [&#039;options&#039; =&gt; $value]);
    }

    /**
     * add form to document
     *
     * @param integer $sigFlags
     * @param boolean $needAppearances
     */
    public function addForm($sigFlags = 0, $needAppearances = false)
    {
        $this-&gt;acroFormId = ++$this-&gt;numObj;
        $this-&gt;o_acroform($this-&gt;acroFormId, &#039;new&#039;, [
          &#039;NeedAppearances&#039; =&gt; $needAppearances ? &#039;true&#039; : &#039;false&#039;,
          &#039;SigFlags&#039; =&gt; $sigFlags
        ]);
    }

    /**
     * save the current graphic state
     */
    function save()
    {
        $this-&gt;addContent(&quot;\nq&quot;);
    }

    /**
     * restore the last graphic state
     */
    function restore()
    {
        // Reset color and transparency caches, as any changes to the graphics
        // state since saving will be discarded
        $this-&gt;currentColor = null;
        $this-&gt;currentStrokeColor = null;
        $this-&gt;currentLineStyle = &#039;&#039;;
        $this-&gt;currentLineTransparency = null;
        $this-&gt;currentFillTransparency = null;
        $this-&gt;addContent(&quot;\nQ&quot;);
    }

    /**
     * draw a clipping rectangle, all the elements added after this will be clipped
     *
     * @param float $x1
     * @param float $y1
     * @param float $width
     * @param float $height
     */
    function clippingRectangle($x1, $y1, $width, $height)
    {
        $this-&gt;save();
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F %.3F %.3F re W n&quot;, $x1, $y1, $width, $height));
    }

    /**
     * draw a clipping rounded rectangle, all the elements added after this will be clipped
     *
     * @param float $x1
     * @param float $y1
     * @param float $w
     * @param float $h
     * @param float $rTL
     * @param float $rTR
     * @param float $rBR
     * @param float $rBL
     */
    function clippingRectangleRounded($x1, $y1, $w, $h, $rTL, $rTR, $rBR, $rBL)
    {
        $this-&gt;save();

        // start: top edge, left end
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F m &quot;, $x1, $y1 - $rTL + $h));

        // line: bottom edge, left end
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F l &quot;, $x1, $y1 + $rBL));

        // curve: bottom-left corner
        $this-&gt;ellipse($x1 + $rBL, $y1 + $rBL, $rBL, 0, 0, 8, 180, 270, false, false, false, true);

        // line: right edge, bottom end
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F l &quot;, $x1 + $w - $rBR, $y1));

        // curve: bottom-right corner
        $this-&gt;ellipse($x1 + $w - $rBR, $y1 + $rBR, $rBR, 0, 0, 8, 270, 360, false, false, false, true);

        // line: right edge, top end
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F l &quot;, $x1 + $w, $y1 + $h - $rTR));

        // curve: bottom-right corner
        $this-&gt;ellipse($x1 + $w - $rTR, $y1 + $h - $rTR, $rTR, 0, 0, 8, 0, 90, false, false, false, true);

        // line: bottom edge, right end
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F l &quot;, $x1 + $rTL, $y1 + $h));

        // curve: top-right corner
        $this-&gt;ellipse($x1 + $rTL, $y1 + $h - $rTL, $rTL, 0, 0, 8, 90, 180, false, false, false, true);

        // line: top edge, left end
        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F l &quot;, $x1 + $rBL, $y1));

        // Close &amp; clip
        $this-&gt;addContent(&quot; W n&quot;);
    }

    /**
     * draw a clipping polygon, the syntax for this is similar to the GD polygon command
     *
     * @param float[] $p
     */
    public function clippingPolygon(array $p): void
    {
        $this-&gt;save();

        $this-&gt;addContent(sprintf(&quot;\n%.3F %.3F m &quot;, $p[0], $p[1]));

        $n = count($p);
        for ($i = 2; $i &lt; $n; $i = $i + 2) {
            $this-&gt;addContent(sprintf(&quot;%.3F %.3F l &quot;, $p[$i], $p[$i + 1]));
        }

        $this-&gt;addContent(&quot;W n&quot;);
    }

    /**
     * ends the last clipping shape
     */
    function clippingEnd()
    {
        $this-&gt;restore();
    }

    /**
     * scale
     *
     * @param float $s_x scaling factor for width as percent
     * @param float $s_y scaling factor for height as percent
     * @param float $x   Origin abscissa
     * @param float $y   Origin ordinate
     */
    function scale($s_x, $s_y, $x, $y)
    {
        $y = $this-&gt;currentPageSize[&quot;height&quot;] - $y;

        $tm = [
            $s_x,
            0,
            0,
            $s_y,
            $x * (1 - $s_x),
            $y * (1 - $s_y)
        ];

        $this-&gt;transform($tm);
    }

    /**
     * translate
     *
     * @param float $t_x movement to the right
     * @param float $t_y movement to the bottom
     */
    function translate($t_x, $t_y)
    {
        $tm = [
            1,
            0,
            0,
            1,
            $t_x,
            -$t_y
        ];

        $this-&gt;transform($tm);
    }

    /**
     * rotate
     *
     * @param float $angle angle in degrees for counter-clockwise rotation
     * @param float $x     Origin abscissa
     * @param float $y     Origin ordinate
     */
    function rotate($angle, $x, $y)
    {
        $y = $this-&gt;currentPageSize[&quot;height&quot;] - $y;

        $a = deg2rad($angle);
        $cos_a = cos($a);
        $sin_a = sin($a);

        $tm = [
            $cos_a,
            -$sin_a,
            $sin_a,
            $cos_a,
            $x - $sin_a * $y - $cos_a * $x,
            $y - $cos_a * $y + $sin_a * $x,
        ];

        $this-&gt;transform($tm);
    }

    /**
     * skew
     *
     * @param float $angle_x
     * @param float $angle_y
     * @param float $x Origin abscissa
     * @param float $y Origin ordinate
     */
    function skew($angle_x, $angle_y, $x, $y)
    {
        $y = $this-&gt;currentPageSize[&quot;height&quot;] - $y;

        $tan_x = tan(deg2rad($angle_x));
        $tan_y = tan(deg2rad($angle_y));

        $tm = [
            1,
            -$tan_y,
            -$tan_x,
            1,
            $tan_x * $y,
            $tan_y * $x,
        ];

        $this-&gt;transform($tm);
    }

    /**
     * apply graphic transformations
     *
     * @param array $tm transformation matrix
     */
    function transform($tm)
    {
        $this-&gt;addContent(vsprintf(&quot;\n %.3F %.3F %.3F %.3F %.3F %.3F cm&quot;, $tm));
    }

    /**
     * add a new page to the document
     * this also makes the new page the current active object
     *
     * @param int $insert
     * @param int $id
     * @param string $pos
     * @return int
     */
    function newPage($insert = 0, $id = 0, $pos = &#039;after&#039;)
    {
        // if there is a state saved, then go up the stack closing them
        // then on the new page, re-open them with the right setings

        if ($this-&gt;nStateStack) {
            for ($i = $this-&gt;nStateStack; $i &gt;= 1; $i--) {
                $this-&gt;restoreState($i);
            }
        }

        $this-&gt;numObj++;

        if ($insert) {
            // the id from the ezPdf class is the id of the contents of the page, not the page object itself
            // query that object to find the parent
            $rid = $this-&gt;objects[$id][&#039;onPage&#039;];
            $opt = [&#039;rid&#039; =&gt; $rid, &#039;pos&#039; =&gt; $pos];
            $this-&gt;o_page($this-&gt;numObj, &#039;new&#039;, $opt);
        } else {
            $this-&gt;o_page($this-&gt;numObj, &#039;new&#039;);
        }

        // if there is a stack saved, then put that onto the page
        if ($this-&gt;nStateStack) {
            for ($i = 1; $i &lt;= $this-&gt;nStateStack; $i++) {
                $this-&gt;saveState($i);
            }
        }

        // and if there has been a stroke or fill color set, then transfer them
        if (isset($this-&gt;currentColor)) {
            $this-&gt;setColor($this-&gt;currentColor, true);
        }

        if (isset($this-&gt;currentStrokeColor)) {
            $this-&gt;setStrokeColor($this-&gt;currentStrokeColor, true);
        }

        // if there is a line style set, then put this in too
        if ($this-&gt;currentLineStyle !== &#039;&#039;) {
            $this-&gt;addContent(&quot;\n$this-&gt;currentLineStyle&quot;);
        }

        // the call to the o_page object set currentContents to the present page, so this can be returned as the page id
        return $this-&gt;currentContents;
    }

    /**
     * Streams the PDF to the client.
     *
     * @param string $filename The filename to present to the client.
     * @param array $options Associative array: &#039;compress&#039; =&gt; 1 or 0 (default 1); &#039;Attachment&#039; =&gt; 1 or 0 (default 1).
     */
    function stream($filename = &quot;document.pdf&quot;, $options = [])
    {
        if (headers_sent()) {
            die(&quot;Unable to stream pdf: headers already sent&quot;);
        }

        if (!isset($options[&quot;compress&quot;])) $options[&quot;compress&quot;] = true;
        if (!isset($options[&quot;Attachment&quot;])) $options[&quot;Attachment&quot;] = true;

        $debug = !$options[&#039;compress&#039;];
        $tmp = ltrim($this-&gt;output($debug));

        header(&quot;Cache-Control: private&quot;);
        header(&quot;Content-Type: application/pdf&quot;);
        header(&quot;Content-Length: &quot; . mb_strlen($tmp, &quot;8bit&quot;));

        $filename = str_replace([&quot;\n&quot;, &quot;&#039;&quot;], &quot;&quot;, basename($filename, &quot;.pdf&quot;)) . &quot;.pdf&quot;;
        $attachment = $options[&quot;Attachment&quot;] ? &quot;attachment&quot; : &quot;inline&quot;;

        $encoding = mb_detect_encoding($filename);
        $fallbackfilename = mb_convert_encoding($filename, &quot;ISO-8859-1&quot;, $encoding);
        $fallbackfilename = str_replace(&quot;\&quot;&quot;, &quot;&quot;, $fallbackfilename);
        $encodedfilename = rawurlencode($filename);

        $contentDisposition = &quot;Content-Disposition: $attachment; filename=\&quot;$fallbackfilename\&quot;&quot;;
        if ($fallbackfilename !== $filename) {
            $contentDisposition .= &quot;; filename*=UTF-8&#039;&#039;$encodedfilename&quot;;
        }
        header($contentDisposition);

        echo $tmp;
        flush();
    }

    /**
     * return the height in units of the current font in the given size
     *
     * @param float $size
     *
     * @return float
     */
    public function getFontHeight(float $size): float
    {
        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        $font = $this-&gt;fonts[$this-&gt;currentFont];

        // for the current font, and the given size, what is the height of the font in user units
        if (isset($font[&#039;Ascender&#039;]) &amp;&amp; isset($font[&#039;Descender&#039;])) {
            $h = $font[&#039;Ascender&#039;] - $font[&#039;Descender&#039;];
        } else {
            $h = $font[&#039;FontBBox&#039;][3] - $font[&#039;FontBBox&#039;][1];
        }

        // have to adjust by a font offset for Windows fonts.  unfortunately it looks like
        // the bounding box calculations are wrong and I don&#039;t know why.
        if (isset($font[&#039;FontHeightOffset&#039;])) {
            // For CourierNew from Windows this needs to be -646 to match the
            // Adobe native Courier font.
            //
            // For FreeMono from GNU this needs to be -337 to match the
            // Courier font.
            //
            // Both have been added manually to the .afm and .ufm files.
            $h += (int)$font[&#039;FontHeightOffset&#039;];
        }

        return $size * $h / 1000;
    }

    /**
     * @param float $size
     *
     * @return float
     */
    public function getFontXHeight(float $size): float
    {
        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        $font = $this-&gt;fonts[$this-&gt;currentFont];

        // for the current font, and the given size, what is the height of the font in user units
        if (isset($font[&#039;XHeight&#039;])) {
            $xh = $font[&#039;Ascender&#039;] - $font[&#039;Descender&#039;];
        } else {
            $xh = $this-&gt;getFontHeight($size) / 2;
        }

        return $size * $xh / 1000;
    }

    /**
     * return the font descender, this will normally return a negative number
     * if you add this number to the baseline, you get the level of the bottom of the font
     * it is in the pdf user units
     *
     * @param float $size
     *
     * @return float
     */
    public function getFontDescender(float $size): float
    {
        // note that this will most likely return a negative value
        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        //$h = $this-&gt;fonts[$this-&gt;currentFont][&#039;FontBBox&#039;][1];
        $h = $this-&gt;fonts[$this-&gt;currentFont][&#039;Descender&#039;];

        return $size * $h / 1000;
    }

    /**
     * filter the text, this is applied to all text just before being inserted into the pdf document
     * it escapes the various things that need to be escaped, and so on
     *
     * @param $text
     * @param bool $bom
     * @param bool $convert_encoding
     * @return string
     */
    function filterText($text, $bom = true, $convert_encoding = true)
    {
        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        if ($convert_encoding) {
            $cf = $this-&gt;currentFont;
            if (isset($this-&gt;fonts[$cf]) &amp;&amp; $this-&gt;fonts[$cf][&#039;isUnicode&#039;]) {
                $text = $this-&gt;utf8toUtf16BE($text, $bom);
            } else {
                //$text = html_entity_decode($text, ENT_QUOTES);
                $text = mb_convert_encoding($text, self::$targetEncoding, &#039;UTF-8&#039;);
            }
        } elseif ($bom) {
            $text = $this-&gt;utf8toUtf16BE($text, $bom);
        }

        // the chr(13) substitution fixes a bug seen in TCPDF (bug #1421290)
        return strtr($text, [&#039;)&#039; =&gt; &#039;\\)&#039;, &#039;(&#039; =&gt; &#039;\\(&#039;, &#039;\\&#039; =&gt; &#039;\\\\&#039;, chr(13) =&gt; &#039;\r&#039;]);
    }

    /**
     * return array containing codepoints (UTF-8 character values) for the
     * string passed in.
     *
     * based on the excellent TCPDF code by Nicola Asuni and the
     * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html
     *
     * @param string $text UTF-8 string to process
     * @return array UTF-8 codepoints array for the string
     */
    function utf8toCodePointsArray(&amp;$text)
    {
        $length = mb_strlen($text, &#039;8bit&#039;); // http://www.php.net/manual/en/function.mb-strlen.php#77040
        $unicode = []; // array containing unicode values
        $bytes = []; // array containing single character byte sequences
        $numbytes = 1; // number of octets needed to represent the UTF-8 character

        for ($i = 0; $i &lt; $length; $i++) {
            $c = ord($text[$i]); // get one string character at time
            if (count($bytes) === 0) { // get starting octect
                if ($c &lt;= 0x7F) {
                    $unicode[] = $c; // use the character &quot;as is&quot; because is ASCII
                    $numbytes = 1;
                } elseif (($c &gt;&gt; 0x05) === 0x06) { // 2 bytes character (0x06 = 110 BIN)
                    $bytes[] = ($c - 0xC0) &lt;&lt; 0x06;
                    $numbytes = 2;
                } elseif (($c &gt;&gt; 0x04) === 0x0E) { // 3 bytes character (0x0E = 1110 BIN)
                    $bytes[] = ($c - 0xE0) &lt;&lt; 0x0C;
                    $numbytes = 3;
                } elseif (($c &gt;&gt; 0x03) === 0x1E) { // 4 bytes character (0x1E = 11110 BIN)
                    $bytes[] = ($c - 0xF0) &lt;&lt; 0x12;
                    $numbytes = 4;
                } else {
                    // use replacement character for other invalid sequences
                    $unicode[] = 0xFFFD;
                    $bytes = [];
                    $numbytes = 1;
                }
            } elseif (($c &gt;&gt; 0x06) === 0x02) { // bytes 2, 3 and 4 must start with 0x02 = 10 BIN
                $bytes[] = $c - 0x80;
                if (count($bytes) === $numbytes) {
                    // compose UTF-8 bytes to a single unicode value
                    $c = $bytes[0];
                    for ($j = 1; $j &lt; $numbytes; $j++) {
                        $c += ($bytes[$j] &lt;&lt; (($numbytes - $j - 1) * 0x06));
                    }
                    if ((($c &gt;= 0xD800) and ($c &lt;= 0xDFFF)) or ($c &gt;= 0x10FFFF)) {
                        // The definition of UTF-8 prohibits encoding character numbers between
                        // U+D800 and U+DFFF, which are reserved for use with the UTF-16
                        // encoding form (as surrogate pairs) and do not directly represent
                        // characters.
                        $unicode[] = 0xFFFD; // use replacement character
                    } else {
                        $unicode[] = $c; // add char to array
                    }
                    // reset data for next char
                    $bytes = [];
                    $numbytes = 1;
                }
            } else {
                // use replacement character for other invalid sequences
                $unicode[] = 0xFFFD;
                $bytes = [];
                $numbytes = 1;
            }
        }

        return $unicode;
    }

    /**
     * convert UTF-8 to UTF-16 with an additional byte order marker
     * at the front if required.
     *
     * based on the excellent TCPDF code by Nicola Asuni and the
     * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html
     *
     * @param string  $text UTF-8 string to process
     * @param boolean $bom  whether to add the byte order marker
     * @return string UTF-16 result string
     */
    function utf8toUtf16BE(&amp;$text, $bom = true)
    {
        $out = $bom ? &quot;\xFE\xFF&quot; : &#039;&#039;;

        $unicode = $this-&gt;utf8toCodePointsArray($text);
        foreach ($unicode as $c) {
            if ($c === 0xFFFD) {
                $out .= &quot;\xFF\xFD&quot;; // replacement character
            } elseif ($c &lt; 0x10000) {
                $out .= chr($c &gt;&gt; 0x08) . chr($c &amp; 0xFF);
            } else {
                $c -= 0x10000;
                $w1 = 0xD800 | ($c &gt;&gt; 0x10);
                $w2 = 0xDC00 | ($c &amp; 0x3FF);
                $out .= chr($w1 &gt;&gt; 0x08) . chr($w1 &amp; 0xFF) . chr($w2 &gt;&gt; 0x08) . chr($w2 &amp; 0xFF);
            }
        }

        return $out;
    }

    /**
     * given a start position and information about how text is to be laid out, calculate where
     * on the page the text will end
     *
     * @param $x
     * @param $y
     * @param $angle
     * @param $size
     * @param $wa
     * @param $text
     * @return array
     */
    private function getTextPosition($x, $y, $angle, $size, $wa, $text)
    {
        // given this information return an array containing x and y for the end position as elements 0 and 1
        $w = $this-&gt;getTextWidth($size, $text);

        // need to adjust for the number of spaces in this text
        $words = explode(&#039; &#039;, $text);
        $nspaces = count($words) - 1;
        $w += $wa * $nspaces;
        $a = deg2rad((float)$angle);

        return [cos($a) * $w + $x, -sin($a) * $w + $y];
    }

    /**
     * Callback method used by smallCaps
     *
     * @param array $matches
     *
     * @return string
     */
    function toUpper($matches)
    {
        return mb_strtoupper($matches[0]);
    }

    function concatMatches($matches)
    {
        $str = &quot;&quot;;
        foreach ($matches as $match) {
            $str .= $match[0];
        }

        return $str;
    }

    /**
     * register text for font subsetting
     *
     * @param string $font
     * @param string $text
     */
    function registerText($font, $text)
    {
        if (!$this-&gt;isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) {
            return;
        }

        if (!isset($this-&gt;stringSubsets[$font])) {
            $base_subset = &quot;\u{fffd}\u{fffe}\u{ffff}&quot;; // fffd =&gt; replacement character, fffe/ffff =&gt; not a character
            $this-&gt;stringSubsets[$font] = $this-&gt;utf8toCodePointsArray($base_subset);
        }

        $this-&gt;stringSubsets[$font] = array_unique(
            array_merge($this-&gt;stringSubsets[$font], $this-&gt;utf8toCodePointsArray($text))
        );
    }

    /**
     * add text to the document, at a specified location, size and angle on the page
     *
     * @param float  $x
     * @param float  $y
     * @param float  $size
     * @param string $text
     * @param float  $angle
     * @param float  $wordSpaceAdjust
     * @param float  $charSpaceAdjust
     * @param bool   $smallCaps
     */
    function addText($x, $y, $size, $text, $angle = 0, $wordSpaceAdjust = 0, $charSpaceAdjust = 0, $smallCaps = false)
    {
        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        $text = str_replace([&quot;\r&quot;, &quot;\n&quot;], &quot;&quot;, $text);

        // if ($smallCaps) {
        //     preg_match_all(&quot;/(\P{Ll}+)/u&quot;, $text, $matches, PREG_SET_ORDER);
        //     $lower = $this-&gt;concatMatches($matches);
        //     d($lower);

        //     preg_match_all(&quot;/(\p{Ll}+)/u&quot;, $text, $matches, PREG_SET_ORDER);
        //     $other = $this-&gt;concatMatches($matches);
        //     d($other);

        //     $text = preg_replace_callback(&quot;/\p{Ll}/u&quot;, array($this, &quot;toUpper&quot;), $text);
        // }

        // if there are any open callbacks, then they should be called, to show the start of the line
        if ($this-&gt;nCallback &gt; 0) {
            for ($i = $this-&gt;nCallback; $i &gt; 0; $i--) {
                // call each function
                $info = [
                    &#039;x&#039;         =&gt; $x,
                    &#039;y&#039;         =&gt; $y,
                    &#039;angle&#039;     =&gt; $angle,
                    &#039;status&#039;    =&gt; &#039;sol&#039;,
                    &#039;p&#039;         =&gt; $this-&gt;callback[$i][&#039;p&#039;],
                    &#039;nCallback&#039; =&gt; $this-&gt;callback[$i][&#039;nCallback&#039;],
                    &#039;height&#039;    =&gt; $this-&gt;callback[$i][&#039;height&#039;],
                    &#039;descender&#039; =&gt; $this-&gt;callback[$i][&#039;descender&#039;]
                ];

                $func = $this-&gt;callback[$i][&#039;f&#039;];
                $this-&gt;$func($info);
            }
        }

        if ($angle == 0) {
            $this-&gt;addContent(sprintf(&quot;\nBT %.3F %.3F Td&quot;, $x, $y));
        } else {
            $a = deg2rad((float)$angle);
            $this-&gt;addContent(
                sprintf(&quot;\nBT %.3F %.3F %.3F %.3F %.3F %.3F Tm&quot;, cos($a), -sin($a), sin($a), cos($a), $x, $y)
            );
        }

        if ($wordSpaceAdjust != 0) {
            $this-&gt;addContent(sprintf(&quot; %.3F Tw&quot;, $wordSpaceAdjust));
        }

        if ($charSpaceAdjust != 0) {
            $this-&gt;addContent(sprintf(&quot; %.3F Tc&quot;, $charSpaceAdjust));
        }

        $len = mb_strlen($text);
        $start = 0;

        if ($start &lt; $len) {
            $part = $text; // OAR - Don&#039;t need this anymore, given that $start always equals zero.  substr($text, $start);
            $place_text = $this-&gt;filterText($part, false);
            // modify unicode text so that extra word spacing is manually implemented (bug #)
            if ($this-&gt;fonts[$this-&gt;currentFont][&#039;isUnicode&#039;] &amp;&amp; $wordSpaceAdjust != 0) {
                $space_scale = 1000 / $size;
                $place_text = str_replace(&quot;\x00\x20&quot;, &quot;\x00\x20)\x00\x20&quot; . (-round($space_scale * $wordSpaceAdjust)) . &quot;\x00\x20(&quot;, $place_text);
            }
            $this-&gt;addContent(&quot; /F$this-&gt;currentFontNum &quot; . sprintf(&#039;%.1F Tf &#039;, $size));
            $this-&gt;addContent(&quot; [($place_text)] TJ&quot;);
        }

        if ($wordSpaceAdjust != 0) {
            $this-&gt;addContent(sprintf(&quot; %.3F Tw&quot;, 0));
        }

        if ($charSpaceAdjust != 0) {
            $this-&gt;addContent(sprintf(&quot; %.3F Tc&quot;, 0));
        }

        $this-&gt;addContent(&#039; ET&#039;);

        // if there are any open callbacks, then they should be called, to show the end of the line
        if ($this-&gt;nCallback &gt; 0) {
            for ($i = $this-&gt;nCallback; $i &gt; 0; $i--) {
                // call each function
                $tmp = $this-&gt;getTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, $text);
                $info = [
                    &#039;x&#039;         =&gt; $tmp[0],
                    &#039;y&#039;         =&gt; $tmp[1],
                    &#039;angle&#039;     =&gt; $angle,
                    &#039;status&#039;    =&gt; &#039;eol&#039;,
                    &#039;p&#039;         =&gt; $this-&gt;callback[$i][&#039;p&#039;],
                    &#039;nCallback&#039; =&gt; $this-&gt;callback[$i][&#039;nCallback&#039;],
                    &#039;height&#039;    =&gt; $this-&gt;callback[$i][&#039;height&#039;],
                    &#039;descender&#039; =&gt; $this-&gt;callback[$i][&#039;descender&#039;]
                ];
                $func = $this-&gt;callback[$i][&#039;f&#039;];
                $this-&gt;$func($info);
            }
        }

        if ($this-&gt;fonts[$this-&gt;currentFont][&#039;isSubsetting&#039;]) {
            $this-&gt;registerText($this-&gt;currentFont, $text);
        }
    }

    /**
     * calculate how wide a given text string will be on a page, at a given size.
     * this can be called externally, but is also used by the other class functions
     *
     * @param float  $size
     * @param string $text
     * @param float  $wordSpacing
     * @param float  $charSpacing
     *
     * @return float
     */
    public function getTextWidth(float $size, string $text, float $wordSpacing = 0.0, float $charSpacing = 0.0): float
    {
        static $ord_cache = [];

        // this function should not change any of the settings, though it will need to
        // track any directives which change during calculation, so copy them at the start
        // and put them back at the end.
        $store_currentTextState = $this-&gt;currentTextState;

        if (!$this-&gt;numFonts) {
            $this-&gt;selectFont($this-&gt;defaultFont);
        }

        // remove non-printable characters since they have no width
        $text = preg_replace(&#039;/[\x00-\x1F\x7F]/u&#039;, &#039;&#039;, $text);

        // hmm, this is where it all starts to get tricky - use the font information to
        // calculate the width of each character, add them up and convert to user units
        $w = 0;
        $cf = $this-&gt;currentFont;
        $current_font = $this-&gt;fonts[$cf];
        $space_scale = 1000 / ($size &gt; 0 ? $size : 1);

        if ($current_font[&#039;isUnicode&#039;]) {
            // for Unicode, use the code points array to calculate width rather
            // than just the string itself
            $unicode = $this-&gt;utf8toCodePointsArray($text);

            foreach ($unicode as $char) {
                // check if we have to replace character
                if (isset($current_font[&#039;differences&#039;][$char])) {
                    $char = $current_font[&#039;differences&#039;][$char];
                }

                if (isset($current_font[&#039;C&#039;][$char])) {
                    $char_width = $current_font[&#039;C&#039;][$char];
                } elseif (isset($current_font[&#039;C&#039;][0xFFFD])) {
                    // fffd =&gt; replacement character
                    $char_width = $current_font[&#039;C&#039;][0xFFFD];
                } else {
                    $char_width = $current_font[&#039;C&#039;][0x0020];
                }

                // add the character width
                $w += $char_width;

                // add additional padding for space
                if (isset($current_font[&#039;codeToName&#039;][$char]) &amp;&amp; $current_font[&#039;codeToName&#039;][$char] === &#039;space&#039;) {  // Space
                    $w += $wordSpacing * $space_scale;
                }
            }

            // add additional char spacing
            if ($charSpacing != 0) {
                $w += $charSpacing * $space_scale * count($unicode);
            }

        } else {
            // If CPDF is in Unicode mode but the current font does not support Unicode we need to convert the character set to Windows-1252
            if ($this-&gt;isUnicode) {
                $text = mb_convert_encoding($text, &#039;Windows-1252&#039;, &#039;UTF-8&#039;);
            }

            $len = mb_strlen($text, &#039;Windows-1252&#039;);

            for ($i = 0; $i &lt; $len; $i++) {
                $c = $text[$i];
                $char = isset($ord_cache[$c]) ? $ord_cache[$c] : ($ord_cache[$c] = ord($c));

                // check if we have to replace character
                if (isset($current_font[&#039;differences&#039;][$char])) {
                    $char = $current_font[&#039;differences&#039;][$char];
                }

                if (isset($current_font[&#039;C&#039;][$char])) {
                    $char_width = $current_font[&#039;C&#039;][$char];
                } elseif (isset($current_font[&#039;C&#039;][0xFFFD])) {
                    // fffd =&gt; replacement character
                    $char_width = $current_font[&#039;C&#039;][0xFFFD];
                } else {
                    $char_width = $current_font[&#039;C&#039;][0x0020];
                }

                // add the character width
                $w += $char_width;

                // add additional padding for space
                if (isset($current_font[&#039;codeToName&#039;][$char]) &amp;&amp; $current_font[&#039;codeToName&#039;][$char] === &#039;space&#039;) {  // Space
                    $w += $wordSpacing * $space_scale;
                }
            }

            // add additional char spacing
            if ($charSpacing != 0) {
                $w += $charSpacing * $space_scale * $len;
            }
        }

        $this-&gt;currentTextState = $store_currentTextState;
        $this-&gt;setCurrentFont();

        return $w * $size / 1000;
    }

    /**
     * this will be called at a new page to return the state to what it was on the
     * end of the previous page, before the stack was closed down
     * This is to get around not being able to have open &#039;q&#039; across pages
     *
     * @param int $pageEnd
     */
    function saveState($pageEnd = 0)
    {
        if ($pageEnd) {
            // this will be called at a new page to return the state to what it was on the
            // end of the previous page, before the stack was closed down
            // This is to get around not being able to have open &#039;q&#039; across pages
            $opt = $this-&gt;stateStack[$pageEnd];
            // ok to use this as stack starts numbering at 1
            $this-&gt;setColor($opt[&#039;col&#039;], true);
            $this-&gt;setStrokeColor($opt[&#039;str&#039;], true);
            $this-&gt;addContent(&quot;\n&quot; . $opt[&#039;lin&#039;]);
            //    $this-&gt;currentLineStyle = $opt[&#039;lin&#039;];
        } else {
            $this-&gt;nStateStack++;
            $this-&gt;stateStack[$this-&gt;nStateStack] = [
                &#039;col&#039; =&gt; $this-&gt;currentColor,
                &#039;str&#039; =&gt; $this-&gt;currentStrokeColor,
                &#039;lin&#039; =&gt; $this-&gt;currentLineStyle
            ];
        }

        $this-&gt;save();
    }

    /**
     * restore a previously saved state
     *
     * @param int $pageEnd
     */
    function restoreState($pageEnd = 0)
    {
        if (!$pageEnd) {
            $n = $this-&gt;nStateStack;
            $this-&gt;currentColor = $this-&gt;stateStack[$n][&#039;col&#039;];
            $this-&gt;currentStrokeColor = $this-&gt;stateStack[$n][&#039;str&#039;];
            $this-&gt;addContent(&quot;\n&quot; . $this-&gt;stateStack[$n][&#039;lin&#039;]);
            $this-&gt;currentLineStyle = $this-&gt;stateStack[$n][&#039;lin&#039;];
            $this-&gt;stateStack[$n] = null;
            unset($this-&gt;stateStack[$n]);
            $this-&gt;nStateStack--;
        }

        $this-&gt;restore();
    }

    /**
     * make a loose object, the output will go into this object, until it is closed, then will revert to
     * the current one.
     * this object will not appear until it is included within a page.
     * the function will return the object number
     *
     * @return int
     */
    function openObject()
    {
        $this-&gt;nStack++;
        $this-&gt;stack[$this-&gt;nStack] = [&#039;c&#039; =&gt; $this-&gt;currentContents, &#039;p&#039; =&gt; $this-&gt;currentPage];
        // add a new object of the content type, to hold the data flow
        $this-&gt;numObj++;
        $this-&gt;o_contents($this-&gt;numObj, &#039;new&#039;);
        $this-&gt;currentContents = $this-&gt;numObj;
        $this-&gt;looseObjects[$this-&gt;numObj] = 1;

        return $this-&gt;numObj;
    }

    /**
     * open an existing object for editing
     *
     * @param $id
     */
    function reopenObject($id)
    {
        $this-&gt;nStack++;
        $this-&gt;stack[$this-&gt;nStack] = [&#039;c&#039; =&gt; $this-&gt;currentContents, &#039;p&#039; =&gt; $this-&gt;currentPage];
        $this-&gt;currentContents = $id;

        // also if this object is the primary contents for a page, then set the current page to its parent
        if (isset($this-&gt;objects[$id][&#039;onPage&#039;])) {
            $this-&gt;currentPage = $this-&gt;objects[$id][&#039;onPage&#039;];
        }
    }

    /**
     * close an object
     */
    function closeObject()
    {
        // close the object, as long as there was one open in the first place, which will be indicated by
        // an objectId on the stack.
        if ($this-&gt;nStack &gt; 0) {
            $this-&gt;currentContents = $this-&gt;stack[$this-&gt;nStack][&#039;c&#039;];
            $this-&gt;currentPage = $this-&gt;stack[$this-&gt;nStack][&#039;p&#039;];
            $this-&gt;nStack--;
            // easier to probably not worry about removing the old entries, they will be overwritten
            // if there are new ones.
        }
    }

    /**
     * stop an object from appearing on pages from this point on
     *
     * @param $id
     */
    function stopObject($id)
    {
        // if an object has been appearing on pages up to now, then stop it, this page will
        // be the last one that could contain it.
        if (isset($this-&gt;addLooseObjects[$id])) {
            $this-&gt;addLooseObjects[$id] = &#039;&#039;;
        }
    }

    /**
     * after an object has been created, it wil only show if it has been added, using this function.
     *
     * @param $id
     * @param string $options
     */
    function addObject($id, $options = &#039;add&#039;)
    {
        // add the specified object to the page
        if (isset($this-&gt;looseObjects[$id]) &amp;&amp; $this-&gt;currentContents != $id) {
            // then it is a valid object, and it is not being added to itself
            switch ($options) {
                case &#039;all&#039;:
                    // then this object is to be added to this page (done in the next block) and
                    // all future new pages.
                    $this-&gt;addLooseObjects[$id] = &#039;all&#039;;

                case &#039;add&#039;:
                    if (isset($this-&gt;objects[$this-&gt;currentContents][&#039;onPage&#039;])) {
                        // then the destination contents is the primary for the page
                        // (though this object is actually added to that page)
                        $this-&gt;o_page($this-&gt;objects[$this-&gt;currentContents][&#039;onPage&#039;], &#039;content&#039;, $id);
                    }
                    break;

                case &#039;even&#039;:
                    $this-&gt;addLooseObjects[$id] = &#039;even&#039;;
                    $pageObjectId = $this-&gt;objects[$this-&gt;currentContents][&#039;onPage&#039;];
                    if ($this-&gt;objects[$pageObjectId][&#039;info&#039;][&#039;pageNum&#039;] % 2 == 0) {
                        $this-&gt;addObject($id);
                        // hacky huh :)
                    }
                    break;

                case &#039;odd&#039;:
                    $this-&gt;addLooseObjects[$id] = &#039;odd&#039;;
                    $pageObjectId = $this-&gt;objects[$this-&gt;currentContents][&#039;onPage&#039;];
                    if ($this-&gt;objects[$pageObjectId][&#039;info&#039;][&#039;pageNum&#039;] % 2 == 1) {
                        $this-&gt;addObject($id);
                        // hacky huh :)
                    }
                    break;

                case &#039;next&#039;:
                    $this-&gt;addLooseObjects[$id] = &#039;all&#039;;
                    break;

                case &#039;nexteven&#039;:
                    $this-&gt;addLooseObjects[$id] = &#039;even&#039;;
                    break;

                case &#039;nextodd&#039;:
                    $this-&gt;addLooseObjects[$id] = &#039;odd&#039;;
                    break;
            }
        }
    }

    /**
     * return a storable representation of a specific object
     *
     * @param $id
     * @return string|null
     */
    function serializeObject($id)
    {
        if (array_key_exists($id, $this-&gt;objects)) {
            return serialize($this-&gt;objects[$id]);
        }

        return null;
    }

    /**
     * restore an object from its stored representation. Returns its new object id.
     *
     * @param $obj
     * @return int
     */
    function restoreSerializedObject($obj)
    {
        $obj_id = $this-&gt;openObject();
        $this-&gt;objects[$obj_id] = unserialize($obj);
        $this-&gt;closeObject();

        return $obj_id;
    }

    /**
     * Embeds a file inside the PDF
     *
     * @param string $filepath path to the file to store inside the PDF
     * @param string $embeddedFilename the filename displayed in the list of embedded files
     * @param string $description a description in the list of embedded files
     */
    public function addEmbeddedFile(string $filepath, string $embeddedFilename, string $description): void
    {
        $this-&gt;numObj++;
        $this-&gt;o_embedded_file_dictionary(
            $this-&gt;numObj,
            &#039;new&#039;,
            [
                &#039;filepath&#039; =&gt; $filepath,
                &#039;filename&#039; =&gt; $embeddedFilename,
                &#039;description&#039; =&gt; $description
            ]
        );
    }

    /**
     * Add content to the documents info object
     *
     * @param string|array $label
     * @param string       $value
     */
    public function addInfo($label, string $value = &quot;&quot;): void
    {
        // this will only work if the label is one of the valid ones.
        // modify this so that arrays can be passed as well.
        // if $label is an array then assume that it is key =&gt; value pairs
        // else assume that they are both scalar, anything else will probably error
        if (is_array($label)) {
            foreach ($label as $l =&gt; $v) {
                $this-&gt;o_info($this-&gt;infoObject, $l, (string) $v);
            }
        } else {
            $this-&gt;o_info($this-&gt;infoObject, $label, $value);
        }
    }

    /**
     * set the viewer preferences of the document, it is up to the browser to obey these.
     *
     * @param $label
     * @param int $value
     */
    function setPreferences($label, $value = 0)
    {
        // this will only work if the label is one of the valid ones.
        if (is_array($label)) {
            foreach ($label as $l =&gt; $v) {
                $this-&gt;o_catalog($this-&gt;catalogId, &#039;viewerPreferences&#039;, [$l =&gt; $v]);
            }
        } else {
            $this-&gt;o_catalog($this-&gt;catalogId, &#039;viewerPreferences&#039;, [$label =&gt; $value]);
        }
    }

    /**
     * extract an integer from a position in a byte stream
     *
     * @param $data
     * @param $pos
     * @param $num
     * @return int
     */
    private function getBytes(&amp;$data, $pos, $num)
    {
        // return the integer represented by $num bytes from $pos within $data
        $ret = 0;
        for ($i = 0; $i &lt; $num; $i++) {
            $ret *= 256;
            $ret += ord($data[$pos + $i]);
        }

        return $ret;
    }

    /**
     * Check if image already added to pdf image directory.
     * If yes, need not to create again (pass empty data)
     *
     * @param string $imgname
     * @return bool
     */
    function image_iscached($imgname)
    {
        return isset($this-&gt;imagelist[$imgname]);
    }

    /**
     * add a PNG image into the document, from a GD object
     * this should work with remote files
     *
     * @param \GdImage|resource $img A GD resource
     * @param string $file The PNG file
     * @param float $x X position
     * @param float $y Y position
     * @param float $w Width
     * @param float $h Height
     * @param bool $is_mask true if the image is a mask
     * @param bool $mask true if the image is masked
     * @throws Exception
     */
    function addImagePng(&amp;$img, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
    {
        if (!function_exists(&quot;imagepng&quot;)) {
            throw new \Exception(&quot;The PHP GD extension is required, but is not installed.&quot;);
        }

        //if already cached, need not to read again
        if (isset($this-&gt;imagelist[$file])) {
            $data = null;
        } else {
            // Example for transparency handling on new image. Retain for current image
            // $tIndex = imagecolortransparent($img);
            // if ($tIndex &gt; 0) {
            //   $tColor    = imagecolorsforindex($img, $tIndex);
            //   $new_tIndex    = imagecolorallocate($new_img, $tColor[&#039;red&#039;], $tColor[&#039;green&#039;], $tColor[&#039;blue&#039;]);
            //   imagefill($new_img, 0, 0, $new_tIndex);
            //   imagecolortransparent($new_img, $new_tIndex);
            // }
            // blending mode (literal/blending) on drawing into current image. not relevant when not saved or not drawn
            //imagealphablending($img, true);

            //default, but explicitely set to ensure pdf compatibility
            imagesavealpha($img, false/*!$is_mask &amp;&amp; !$mask*/);

            $error = 0;
            //DEBUG_IMG_TEMP
            //debugpng
            if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                print &#039;[addImagePng &#039; . $file . &#039;]&#039;;
            }

            ob_start();
            @imagepng($img);
            $data = ob_get_clean();

            if ($data == &#039;&#039;) {
                $error = 1;
                $errormsg = &#039;trouble writing file from GD&#039;;
                //DEBUG_IMG_TEMP
                //debugpng
                if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                    print &#039;trouble writing file from GD&#039;;
                }
            }

            if ($error) {
                $this-&gt;addMessage(&#039;PNG error - (&#039; . $file . &#039;) &#039; . $errormsg);

                return;
            }
        }  //End isset($this-&gt;imagelist[$file]) (png Duplicate removal)

        $this-&gt;addPngFromBuf($data, $file, $x, $y, $w, $h, $is_mask, $mask);
    }

    /**
     * @param $file
     * @param $x
     * @param $y
     * @param $w
     * @param $h
     * @param $byte
     */
    protected function addImagePngAlpha($file, $x, $y, $w, $h, $byte)
    {
        // generate images
        $img = @imagecreatefrompng($file);

        if ($img === false) {
            return;
        }

        // FIXME The pixel transformation doesn&#039;t work well with 8bit PNGs
        $eight_bit = ($byte &amp; 4) !== 4;

        $wpx = imagesx($img);
        $hpx = imagesy($img);

        imagesavealpha($img, false);

        // create temp alpha file
        $tempfile_alpha = @tempnam($this-&gt;tmp, &quot;cpdf_img_&quot;);
        @unlink($tempfile_alpha);
        $tempfile_alpha = &quot;$tempfile_alpha.png&quot;;

        // create temp plain file
        $tempfile_plain = @tempnam($this-&gt;tmp, &quot;cpdf_img_&quot;);
        @unlink($tempfile_plain);
        $tempfile_plain = &quot;$tempfile_plain.png&quot;;

        $imgalpha = imagecreate($wpx, $hpx);
        imagesavealpha($imgalpha, false);

        // generate gray scale palette (0 -&gt; 255)
        for ($c = 0; $c &lt; 256; ++$c) {
            imagecolorallocate($imgalpha, $c, $c, $c);
        }

        // Use PECL gmagick + Graphics Magic to process transparent PNG images
        if (extension_loaded(&quot;gmagick&quot;)) {
            $gmagick = new \Gmagick($file);
            $gmagick-&gt;setimageformat(&#039;png&#039;);

            // Get opacity channel (negative of alpha channel)
            $alpha_channel_neg = clone $gmagick;
            $alpha_channel_neg-&gt;separateimagechannel(\Gmagick::CHANNEL_OPACITY);

            // Negate opacity channel
            $alpha_channel = new \Gmagick();
            $alpha_channel-&gt;newimage($wpx, $hpx, &quot;#FFFFFF&quot;, &quot;png&quot;);
            $alpha_channel-&gt;compositeimage($alpha_channel_neg, \Gmagick::COMPOSITE_DIFFERENCE, 0, 0);
            $alpha_channel-&gt;separateimagechannel(\Gmagick::CHANNEL_RED);
            $alpha_channel-&gt;writeimage($tempfile_alpha);

            // Cast to 8bit+palette
            $imgalpha_ = @imagecreatefrompng($tempfile_alpha);
            imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx);
            imagedestroy($imgalpha_);
            imagepng($imgalpha, $tempfile_alpha);

            // Make opaque image
            $color_channels = new \Gmagick();
            $color_channels-&gt;newimage($wpx, $hpx, &quot;#FFFFFF&quot;, &quot;png&quot;);
            $color_channels-&gt;compositeimage($gmagick, \Gmagick::COMPOSITE_COPYRED, 0, 0);
            $color_channels-&gt;compositeimage($gmagick, \Gmagick::COMPOSITE_COPYGREEN, 0, 0);
            $color_channels-&gt;compositeimage($gmagick, \Gmagick::COMPOSITE_COPYBLUE, 0, 0);
            $color_channels-&gt;writeimage($tempfile_plain);

            $imgplain = @imagecreatefrompng($tempfile_plain);
        }
        // Use PECL imagick + ImageMagic to process transparent PNG images
        elseif (extension_loaded(&quot;imagick&quot;)) {
            // Native cloning was added to pecl-imagick in svn commit 263814
            // the first version containing it was 3.0.1RC1
            static $imagickClonable = null;
            if ($imagickClonable === null) {
                $imagickClonable = true;
                if (defined(&#039;Imagick::IMAGICK_EXTVER&#039;)) {
                    $imagickVersion = \Imagick::IMAGICK_EXTVER;
                } else {
                    $imagickVersion = &#039;0&#039;;
                }
                if (version_compare($imagickVersion, &#039;0.0.1&#039;, &#039;&gt;=&#039;)) {
                    $imagickClonable = version_compare($imagickVersion, &#039;3.0.1rc1&#039;, &#039;&gt;=&#039;);
                }
            }

            $imagick = new \Imagick();
            $imagick-&gt;setRegistry(&#039;temporary-path&#039;, $this-&gt;tmp);
            $imagick-&gt;setFormat(&#039;PNG&#039;);
            $imagick-&gt;readImage($file);

            // Get opacity channel (negative of alpha channel)
            if ($imagick-&gt;getImageAlphaChannel()) {
                $alpha_channel = $imagickClonable ? clone $imagick : $imagick-&gt;clone();
                $alpha_channel-&gt;separateImageChannel(\Imagick::CHANNEL_ALPHA);
                // Since ImageMagick7 negate invert transparency as default
                if (\Imagick::getVersion()[&#039;versionNumber&#039;] &lt; 1800) {
                    $alpha_channel-&gt;negateImage(true);
                }

                try {
                    $alpha_channel-&gt;writeImage($tempfile_alpha);
                } catch (\ImagickException $th) {
                    // Backwards compatible retry attempt in case the IMagick policy is still configured in lowercase
                    $alpha_channel-&gt;setFormat(&#039;png&#039;);
                    $alpha_channel-&gt;writeImage($tempfile_alpha);
                }

                // Cast to 8bit+palette
                $imgalpha_ = @imagecreatefrompng($tempfile_alpha);
                imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx);
                imagedestroy($imgalpha_);
                imagepng($imgalpha, $tempfile_alpha);
            } else {
                $tempfile_alpha = null;
            }

            // Make opaque image
            $color_channels = new \Imagick();
            $color_channels-&gt;setRegistry(&#039;temporary-path&#039;, $this-&gt;tmp);
            $color_channels-&gt;newImage($wpx, $hpx, &quot;#FFFFFF&quot;, &quot;png&quot;);
            $color_channels-&gt;compositeImage($imagick, \Imagick::COMPOSITE_COPYRED, 0, 0);
            $color_channels-&gt;compositeImage($imagick, \Imagick::COMPOSITE_COPYGREEN, 0, 0);
            $color_channels-&gt;compositeImage($imagick, \Imagick::COMPOSITE_COPYBLUE, 0, 0);
            $color_channels-&gt;writeImage($tempfile_plain);

            $imgplain = @imagecreatefrompng($tempfile_plain);
        } else {
            // allocated colors cache
            $allocated_colors = [];

            // extract alpha channel
            for ($xpx = 0; $xpx &lt; $wpx; ++$xpx) {
                for ($ypx = 0; $ypx &lt; $hpx; ++$ypx) {
                    $color = imagecolorat($img, $xpx, $ypx);
                    $col = imagecolorsforindex($img, $color);
                    $alpha = $col[&#039;alpha&#039;];

                    if ($eight_bit) {
                        // with gamma correction
                        $gammacorr = 2.2;
                        $pixel = round(pow((((127 - $alpha) * 255 / 127) / 255), $gammacorr) * 255);
                    } else {
                        // without gamma correction
                        $pixel = (127 - $alpha) * 2;

                        $key = $col[&#039;red&#039;] . $col[&#039;green&#039;] . $col[&#039;blue&#039;];

                        if (!isset($allocated_colors[$key])) {
                            $pixel_img = imagecolorallocate($img, $col[&#039;red&#039;], $col[&#039;green&#039;], $col[&#039;blue&#039;]);
                            $allocated_colors[$key] = $pixel_img;
                        } else {
                            $pixel_img = $allocated_colors[$key];
                        }

                        imagesetpixel($img, $xpx, $ypx, $pixel_img);
                    }

                    imagesetpixel($imgalpha, $xpx, $ypx, $pixel);
                }
            }

            // extract image without alpha channel
            $imgplain = imagecreatetruecolor($wpx, $hpx);
            imagecopy($imgplain, $img, 0, 0, 0, 0, $wpx, $hpx);
            imagedestroy($img);

            imagepng($imgalpha, $tempfile_alpha);
            imagepng($imgplain, $tempfile_plain);
        }

        $this-&gt;imageAlphaList[$file] = [$tempfile_alpha, $tempfile_plain];

        // embed mask image
        if ($tempfile_alpha) {
            $this-&gt;addImagePng($imgalpha, $tempfile_alpha, $x, $y, $w, $h, true);
            imagedestroy($imgalpha);
            $this-&gt;imageCache[] = $tempfile_alpha;
        }

        // embed image, masked with previously embedded mask
        $this-&gt;addImagePng($imgplain, $tempfile_plain, $x, $y, $w, $h, false, ($tempfile_alpha !== null));
        imagedestroy($imgplain);
        $this-&gt;imageCache[] = $tempfile_plain;
    }

    /**
     * add a PNG image into the document, from a file
     * this should work with remote files
     *
     * @param $file
     * @param $x
     * @param $y
     * @param int $w
     * @param int $h
     * @throws Exception
     */
    function addPngFromFile($file, $x, $y, $w = 0, $h = 0)
    {
        if (!function_exists(&quot;imagecreatefrompng&quot;)) {
            throw new \Exception(&quot;The PHP GD extension is required, but is not installed.&quot;);
        }

        if (isset($this-&gt;imageAlphaList[$file])) {
            [$alphaFile, $plainFile] = $this-&gt;imageAlphaList[$file];

            if ($alphaFile) {
                $img = null;
                $this-&gt;addImagePng($img, $alphaFile, $x, $y, $w, $h, true);
            }

            $img = null;
            $this-&gt;addImagePng($img, $plainFile, $x, $y, $w, $h, false, ($plainFile !== null));
            return;
        }

        //if already cached, need not to read again
        if (isset($this-&gt;imagelist[$file])) {
            $img = null;
        } else {
            $info = file_get_contents($file, false, null, 24, 5);
            $meta = unpack(&quot;CbitDepth/CcolorType/CcompressionMethod/CfilterMethod/CinterlaceMethod&quot;, $info);
            $bit_depth = $meta[&quot;bitDepth&quot;];
            $color_type = $meta[&quot;colorType&quot;];

            // http://www.w3.org/TR/PNG/#11IHDR
            // 3 =&gt; indexed
            // 4 =&gt; greyscale with alpha
            // 6 =&gt; fullcolor with alpha
            $is_alpha = in_array($color_type, [4, 6]) || ($color_type == 3 &amp;&amp; $bit_depth != 4);

            if ($is_alpha) { // exclude grayscale alpha
                $this-&gt;addImagePngAlpha($file, $x, $y, $w, $h, $color_type);
                return;
            }

            //png files typically contain an alpha channel.
            //pdf file format or class.pdf does not support alpha blending.
            //on alpha blended images, more transparent areas have a color near black.
            //This appears in the result on not storing the alpha channel.
            //Correct would be the box background image or its parent when transparent.
            //But this would make the image dependent on the background.
            //Therefore create an image with white background and copy in
            //A more natural background than black is white.
            //Therefore create an empty image with white background and merge the
            //image in with alpha blending.
            $imgtmp = @imagecreatefrompng($file);
            if (!$imgtmp) {
                return;
            }
            $sx = imagesx($imgtmp);
            $sy = imagesy($imgtmp);
            $img = imagecreatetruecolor($sx, $sy);
            imagealphablending($img, true);

            // @todo is it still needed ??
            $ti = imagecolortransparent($imgtmp);
            if ($ti &gt;= 0) {
                $tc = imagecolorsforindex($imgtmp, $ti);
                $ti = imagecolorallocate($img, $tc[&#039;red&#039;], $tc[&#039;green&#039;], $tc[&#039;blue&#039;]);
                imagefill($img, 0, 0, $ti);
                imagecolortransparent($img, $ti);
            } else {
                imagefill($img, 1, 1, imagecolorallocate($img, 255, 255, 255));
            }

            imagecopy($img, $imgtmp, 0, 0, 0, 0, $sx, $sy);
            imagedestroy($imgtmp);
        }
        $this-&gt;addImagePng($img, $file, $x, $y, $w, $h);

        if ($img) {
            imagedestroy($img);
        }
    }

    /**
     * add an SVG image into the document from a file
     *
     * @param $file
     * @param $x
     * @param $y
     * @param int $w
     * @param int $h
     */
    function addSvgFromFile($file, $x, $y, $w = 0, $h = 0)
    {
        $doc = new \Svg\Document();
        $doc-&gt;loadFile($file);
        $dimensions = $doc-&gt;getDimensions();

        $this-&gt;save();

        $this-&gt;transform([$w / $dimensions[&quot;width&quot;], 0, 0, $h / $dimensions[&quot;height&quot;], $x, $y]);

        $surface = new \Svg\Surface\SurfaceCpdf($doc, $this);
        $doc-&gt;render($surface);

        $this-&gt;restore();
    }

    /**
     * add a PNG image into the document, from a memory buffer of the file
     *
     * @param $data
     * @param $file
     * @param $x
     * @param $y
     * @param float $w
     * @param float $h
     * @param bool $is_mask
     * @param null $mask
     */
    function addPngFromBuf(&amp;$data, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
    {
        if (isset($this-&gt;imagelist[$file])) {
            $data = null;
            $info[&#039;width&#039;] = $this-&gt;imagelist[$file][&#039;w&#039;];
            $info[&#039;height&#039;] = $this-&gt;imagelist[$file][&#039;h&#039;];
            $label = $this-&gt;imagelist[$file][&#039;label&#039;];
        } else {
            if ($data == null) {
                $this-&gt;addMessage(&#039;addPngFromBuf error - data not present!&#039;);

                return;
            }

            $error = 0;

            if (!$error) {
                $header = chr(137) . chr(80) . chr(78) . chr(71) . chr(13) . chr(10) . chr(26) . chr(10);

                if (mb_substr($data, 0, 8, &#039;8bit&#039;) != $header) {
                    $error = 1;

                    if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                        print &#039;[addPngFromFile this file does not have a valid header &#039; . $file . &#039;]&#039;;
                    }

                    $errormsg = &#039;this file does not have a valid header&#039;;
                }
            }

            if (!$error) {
                // set pointer
                $p = 8;
                $len = mb_strlen($data, &#039;8bit&#039;);

                // cycle through the file, identifying chunks
                $haveHeader = 0;
                $info = [];
                $idata = &#039;&#039;;
                $pdata = &#039;&#039;;

                while ($p &lt; $len) {
                    $chunkLen = $this-&gt;getBytes($data, $p, 4);
                    $chunkType = mb_substr($data, $p + 4, 4, &#039;8bit&#039;);

                    switch ($chunkType) {
                        case &#039;IHDR&#039;:
                            // this is where all the file information comes from
                            $info[&#039;width&#039;] = $this-&gt;getBytes($data, $p + 8, 4);
                            $info[&#039;height&#039;] = $this-&gt;getBytes($data, $p + 12, 4);
                            $info[&#039;bitDepth&#039;] = ord($data[$p + 16]);
                            $info[&#039;colorType&#039;] = ord($data[$p + 17]);
                            $info[&#039;compressionMethod&#039;] = ord($data[$p + 18]);
                            $info[&#039;filterMethod&#039;] = ord($data[$p + 19]);
                            $info[&#039;interlaceMethod&#039;] = ord($data[$p + 20]);

                            //print_r($info);
                            $haveHeader = 1;
                            if ($info[&#039;compressionMethod&#039;] != 0) {
                                $error = 1;

                                //debugpng
                                if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                                    print &#039;[addPngFromFile unsupported compression method &#039; . $file . &#039;]&#039;;
                                }

                                $errormsg = &#039;unsupported compression method&#039;;
                            }

                            if ($info[&#039;filterMethod&#039;] != 0) {
                                $error = 1;

                                //debugpng
                                if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                                    print &#039;[addPngFromFile unsupported filter method &#039; . $file . &#039;]&#039;;
                                }

                                $errormsg = &#039;unsupported filter method&#039;;
                            }
                            break;

                        case &#039;PLTE&#039;:
                            $pdata .= mb_substr($data, $p + 8, $chunkLen, &#039;8bit&#039;);
                            break;

                        case &#039;IDAT&#039;:
                            $idata .= mb_substr($data, $p + 8, $chunkLen, &#039;8bit&#039;);
                            break;

                        case &#039;tRNS&#039;:
                            //this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk
                            //print &quot;tRNS found, color type = &quot;.$info[&#039;colorType&#039;].&quot;\n&quot;;
                            $transparency = [];

                            switch ($info[&#039;colorType&#039;]) {
                                // indexed color, rbg
                                case 3:
                                    /* corresponding to entries in the plte chunk
                                     Alpha for palette index 0: 1 byte
                                     Alpha for palette index 1: 1 byte
                                     ...etc...
                                    */
                                    // there will be one entry for each palette entry. up until the last non-opaque entry.
                                    // set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent)
                                    $transparency[&#039;type&#039;] = &#039;indexed&#039;;
                                    $trans = 0;

                                    for ($i = $chunkLen; $i &gt;= 0; $i--) {
                                        if (ord($data[$p + 8 + $i]) == 0) {
                                            $trans = $i;
                                        }
                                    }

                                    $transparency[&#039;data&#039;] = $trans;
                                    break;

                                // grayscale
                                case 0:
                                    /* corresponding to entries in the plte chunk
                                     Gray: 2 bytes, range 0 .. (2^bitdepth)-1
                                    */
                                    //            $transparency[&#039;grayscale&#039;] = $this-&gt;PRVT_getBytes($data,$p+8,2); // g = grayscale
                                    $transparency[&#039;type&#039;] = &#039;indexed&#039;;
                                    $transparency[&#039;data&#039;] = ord($data[$p + 8 + 1]);
                                    break;

                                // truecolor
                                case 2:
                                    /* corresponding to entries in the plte chunk
                                     Red: 2 bytes, range 0 .. (2^bitdepth)-1
                                     Green: 2 bytes, range 0 .. (2^bitdepth)-1
                                     Blue: 2 bytes, range 0 .. (2^bitdepth)-1
                                    */
                                    $transparency[&#039;r&#039;] = $this-&gt;getBytes($data, $p + 8, 2);
                                    // r from truecolor
                                    $transparency[&#039;g&#039;] = $this-&gt;getBytes($data, $p + 10, 2);
                                    // g from truecolor
                                    $transparency[&#039;b&#039;] = $this-&gt;getBytes($data, $p + 12, 2);
                                    // b from truecolor

                                    $transparency[&#039;type&#039;] = &#039;color-key&#039;;
                                    break;

                                //unsupported transparency type
                                default:
                                    if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                                        print &#039;[addPngFromFile unsupported transparency type &#039; . $file . &#039;]&#039;;
                                    }
                                    break;
                            }

                            // KS End new code
                            break;

                        default:
                            break;
                    }

                    $p += $chunkLen + 12;
                }

                if (!$haveHeader) {
                    $error = 1;

                    //debugpng
                    if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                        print &#039;[addPngFromFile information header is missing &#039; . $file . &#039;]&#039;;
                    }

                    $errormsg = &#039;information header is missing&#039;;
                }

                if (isset($info[&#039;interlaceMethod&#039;]) &amp;&amp; $info[&#039;interlaceMethod&#039;]) {
                    $error = 1;

                    //debugpng
                    if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                        print &#039;[addPngFromFile no support for interlaced images in pdf &#039; . $file . &#039;]&#039;;
                    }

                    $errormsg = &#039;There appears to be no support for interlaced images in pdf.&#039;;
                }
            }

            if (!$error &amp;&amp; $info[&#039;bitDepth&#039;] &gt; 8) {
                $error = 1;

                //debugpng
                if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                    print &#039;[addPngFromFile bit depth of 8 or less is supported &#039; . $file . &#039;]&#039;;
                }

                $errormsg = &#039;only bit depth of 8 or less is supported&#039;;
            }

            if (!$error) {
                switch ($info[&#039;colorType&#039;]) {
                    case 3:
                        $color = &#039;DeviceRGB&#039;;
                        $ncolor = 1;
                        break;

                    case 2:
                        $color = &#039;DeviceRGB&#039;;
                        $ncolor = 3;
                        break;

                    case 0:
                        $color = &#039;DeviceGray&#039;;
                        $ncolor = 1;
                        break;

                    default:
                        $error = 1;

                        //debugpng
                        if (defined(&quot;DEBUGPNG&quot;) &amp;&amp; DEBUGPNG) {
                            print &#039;[addPngFromFile alpha channel not supported: &#039; . $info[&#039;colorType&#039;] . &#039; &#039; . $file . &#039;]&#039;;
                        }

                        $errormsg = &#039;transparency alpha channel not supported, transparency only supported for palette images.&#039;;
                }
            }

            if ($error) {
                $this-&gt;addMessage(&#039;PNG error - (&#039; . $file . &#039;) &#039; . $errormsg);

                return;
            }

            //print_r($info);
            // so this image is ok... add it in.
            $this-&gt;numImages++;
            $im = $this-&gt;numImages;
            $label = &quot;I$im&quot;;
            $this-&gt;numObj++;

            //  $this-&gt;o_image($this-&gt;numObj,&#039;new&#039;,array(&#039;label&#039; =&gt; $label,&#039;data&#039; =&gt; $idata,&#039;iw&#039; =&gt; $w,&#039;ih&#039; =&gt; $h,&#039;type&#039; =&gt; &#039;png&#039;,&#039;ic&#039; =&gt; $info[&#039;width&#039;]));
            $options = [
                &#039;label&#039;            =&gt; $label,
                &#039;data&#039;             =&gt; $idata,
                &#039;bitsPerComponent&#039; =&gt; $info[&#039;bitDepth&#039;],
                &#039;pdata&#039;            =&gt; $pdata,
                &#039;iw&#039;               =&gt; $info[&#039;width&#039;],
                &#039;ih&#039;               =&gt; $info[&#039;height&#039;],
                &#039;type&#039;             =&gt; &#039;png&#039;,
                &#039;color&#039;            =&gt; $color,
                &#039;ncolor&#039;           =&gt; $ncolor,
                &#039;masked&#039;           =&gt; $mask,
                &#039;isMask&#039;           =&gt; $is_mask
            ];

            if (isset($transparency)) {
                $options[&#039;transparency&#039;] = $transparency;
            }

            $this-&gt;o_image($this-&gt;numObj, &#039;new&#039;, $options);
            $this-&gt;imagelist[$file] = [&#039;label&#039; =&gt; $label, &#039;w&#039; =&gt; $info[&#039;width&#039;], &#039;h&#039; =&gt; $info[&#039;height&#039;]];
        }

        if ($is_mask) {
            return;
        }

        if ($w &lt;= 0 &amp;&amp; $h &lt;= 0) {
            $w = $info[&#039;width&#039;];
            $h = $info[&#039;height&#039;];
        }

        if ($w &lt;= 0) {
            $w = $h / $info[&#039;height&#039;] * $info[&#039;width&#039;];
        }

        if ($h &lt;= 0) {
            $h = $w * $info[&#039;height&#039;] / $info[&#039;width&#039;];
        }

        $this-&gt;addContent(sprintf(&quot;\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ&quot;, $w, $h, $x, $y, $label));
    }

    /**
     * add a JPEG image into the document, from a file
     *
     * @param $img
     * @param $x
     * @param $y
     * @param int $w
     * @param int $h
     */
    function addJpegFromFile($img, $x, $y, $w = 0, $h = 0)
    {
        // attempt to add a jpeg image straight from a file, using no GD commands
        // note that this function is unable to operate on a remote file.

        if (!file_exists($img)) {
            return;
        }

        if ($this-&gt;image_iscached($img)) {
            $data = null;
            $imageWidth = $this-&gt;imagelist[$img][&#039;w&#039;];
            $imageHeight = $this-&gt;imagelist[$img][&#039;h&#039;];
            $channels = $this-&gt;imagelist[$img][&#039;c&#039;];
        } else {
            $tmp = getimagesize($img);
            $imageWidth = $tmp[0];
            $imageHeight = $tmp[1];

            if (isset($tmp[&#039;channels&#039;])) {
                $channels = $tmp[&#039;channels&#039;];
            } else {
                $channels = 3;
            }

            $data = file_get_contents($img);
        }

        if ($w &lt;= 0 &amp;&amp; $h &lt;= 0) {
            $w = $imageWidth;
        }

        if ($w == 0) {
            $w = $h / $imageHeight * $imageWidth;
        }

        if ($h == 0) {
            $h = $w * $imageHeight / $imageWidth;
        }

        $this-&gt;addJpegImage_common($data, $img, $imageWidth, $imageHeight, $x, $y, $w, $h, $channels);
    }

    /**
     * common code used by the two JPEG adding functions
     * @param $data
     * @param $imgname
     * @param $imageWidth
     * @param $imageHeight
     * @param $x
     * @param $y
     * @param int $w
     * @param int $h
     * @param int $channels
     */
    private function addJpegImage_common(
        &amp;$data,
        $imgname,
        $imageWidth,
        $imageHeight,
        $x,
        $y,
        $w = 0,
        $h = 0,
        $channels = 3
    ) {
        if ($this-&gt;image_iscached($imgname)) {
            $label = $this-&gt;imagelist[$imgname][&#039;label&#039;];
            //debugpng
            //if (DEBUGPNG) print &#039;[addJpegImage_common Duplicate &#039;.$imgname.&#039;]&#039;;

        } else {
            if ($data == null) {
                $this-&gt;addMessage(&#039;addJpegImage_common error - (&#039; . $imgname . &#039;) data not present!&#039;);

                return;
            }

            // note that this function is not to be called externally
            // it is just the common code between the GD and the file options
            $this-&gt;numImages++;
            $im = $this-&gt;numImages;
            $label = &quot;I$im&quot;;
            $this-&gt;numObj++;

            $this-&gt;o_image(
                $this-&gt;numObj,
                &#039;new&#039;,
                [
                    &#039;label&#039;    =&gt; $label,
                    &#039;data&#039;     =&gt; &amp;$data,
                    &#039;iw&#039;       =&gt; $imageWidth,
                    &#039;ih&#039;       =&gt; $imageHeight,
                    &#039;channels&#039; =&gt; $channels
                ]
            );

            $this-&gt;imagelist[$imgname] = [
                &#039;label&#039; =&gt; $label,
                &#039;w&#039;     =&gt; $imageWidth,
                &#039;h&#039;     =&gt; $imageHeight,
                &#039;c&#039;     =&gt; $channels
            ];
        }

        $this-&gt;addContent(sprintf(&quot;\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ &quot;, $w, $h, $x, $y, $label));
    }

    /**
     * specify where the document should open when it first starts
     *
     * @param $style
     * @param int $a
     * @param int $b
     * @param int $c
     */
    function openHere($style, $a = 0, $b = 0, $c = 0)
    {
        // this function will open the document at a specified page, in a specified style
        // the values for style, and the required parameters are:
        // &#039;XYZ&#039;  left, top, zoom
        // &#039;Fit&#039;
        // &#039;FitH&#039; top
        // &#039;FitV&#039; left
        // &#039;FitR&#039; left,bottom,right
        // &#039;FitB&#039;
        // &#039;FitBH&#039; top
        // &#039;FitBV&#039; left
        $this-&gt;numObj++;
        $this-&gt;o_destination(
            $this-&gt;numObj,
            &#039;new&#039;,
            [&#039;page&#039; =&gt; $this-&gt;currentPage, &#039;type&#039; =&gt; $style, &#039;p1&#039; =&gt; $a, &#039;p2&#039; =&gt; $b, &#039;p3&#039; =&gt; $c]
        );
        $id = $this-&gt;catalogId;
        $this-&gt;o_catalog($id, &#039;openHere&#039;, $this-&gt;numObj);
    }

    /**
     * Add JavaScript code to the PDF document
     *
     * @param string $code
     */
    function addJavascript($code)
    {
        $this-&gt;javascript .= $code;
    }

    /**
     * create a labelled destination within the document
     *
     * @param $label
     * @param $style
     * @param int $a
     * @param int $b
     * @param int $c
     */
    function addDestination($label, $style, $a = 0, $b = 0, $c = 0)
    {
        // associates the given label with the destination, it is done this way so that a destination can be specified after
        // it has been linked to
        // styles are the same as the &#039;openHere&#039; function
        $this-&gt;numObj++;
        $this-&gt;o_destination(
            $this-&gt;numObj,
            &#039;new&#039;,
            [&#039;page&#039; =&gt; $this-&gt;currentPage, &#039;type&#039; =&gt; $style, &#039;p1&#039; =&gt; $a, &#039;p2&#039; =&gt; $b, &#039;p3&#039; =&gt; $c]
        );
        $id = $this-&gt;numObj;

        // store the label-&gt;idf relationship, note that this means that labels can be used only once
        $this-&gt;destinations[&quot;$label&quot;] = $id;
    }

    /**
     * define font families, this is used to initialize the font families for the default fonts
     * and for the user to add new ones for their fonts. The default bahavious can be overridden should
     * that be desired.
     *
     * @param $family
     * @param string $options
     */
    function setFontFamily($family, $options = &#039;&#039;)
    {
        if (!is_array($options)) {
            if ($family === &#039;init&#039;) {
                // set the known family groups
                // these font families will be used to enable bold and italic markers to be included
                // within text streams. html forms will be used... &lt;b&gt;&lt;/b&gt; &lt;i&gt;&lt;/i&gt;
                $this-&gt;fontFamilies[&#039;Helvetica.afm&#039;] =
                    [
                        &#039;b&#039;  =&gt; &#039;Helvetica-Bold.afm&#039;,
                        &#039;i&#039;  =&gt; &#039;Helvetica-Oblique.afm&#039;,
                        &#039;bi&#039; =&gt; &#039;Helvetica-BoldOblique.afm&#039;,
                        &#039;ib&#039; =&gt; &#039;Helvetica-BoldOblique.afm&#039;
                    ];

                $this-&gt;fontFamilies[&#039;Courier.afm&#039;] =
                    [
                        &#039;b&#039;  =&gt; &#039;Courier-Bold.afm&#039;,
                        &#039;i&#039;  =&gt; &#039;Courier-Oblique.afm&#039;,
                        &#039;bi&#039; =&gt; &#039;Courier-BoldOblique.afm&#039;,
                        &#039;ib&#039; =&gt; &#039;Courier-BoldOblique.afm&#039;
                    ];

                $this-&gt;fontFamilies[&#039;Times-Roman.afm&#039;] =
                    [
                        &#039;b&#039;  =&gt; &#039;Times-Bold.afm&#039;,
                        &#039;i&#039;  =&gt; &#039;Times-Italic.afm&#039;,
                        &#039;bi&#039; =&gt; &#039;Times-BoldItalic.afm&#039;,
                        &#039;ib&#039; =&gt; &#039;Times-BoldItalic.afm&#039;
                    ];
            }
        } else {

            // the user is trying to set a font family
            // note that this can also be used to set the base ones to something else
            if (mb_strlen($family)) {
                $this-&gt;fontFamilies[$family] = $options;
            }
        }
    }

    /**
     * used to add messages for use in debugging
     *
     * @param $message
     */
    function addMessage($message)
    {
        $this-&gt;messages .= $message . &quot;\n&quot;;
    }

    /**
     * a few functions which should allow the document to be treated transactionally.
     *
     * @param $action
     */
    function transaction($action)
    {
        switch ($action) {
            case &#039;start&#039;:
                // store all the data away into the checkpoint variable
                $data = get_object_vars($this);
                $this-&gt;checkpoint = $data;
                unset($data);
                break;

            case &#039;commit&#039;:
                if (is_array($this-&gt;checkpoint) &amp;&amp; isset($this-&gt;checkpoint[&#039;checkpoint&#039;])) {
                    $tmp = $this-&gt;checkpoint[&#039;checkpoint&#039;];
                    $this-&gt;checkpoint = $tmp;
                    unset($tmp);
                } else {
                    $this-&gt;checkpoint = &#039;&#039;;
                }
                break;

            case &#039;rewind&#039;:
                // do not destroy the current checkpoint, but move us back to the state then, so that we can try again
                if (is_array($this-&gt;checkpoint)) {
                    // can only abort if were inside a checkpoint
                    $tmp = $this-&gt;checkpoint;

                    foreach ($tmp as $k =&gt; $v) {
                        if ($k !== &#039;checkpoint&#039;) {
                            $this-&gt;$k = $v;
                        }
                    }
                    unset($tmp);
                }
                break;

            case &#039;abort&#039;:
                if (is_array($this-&gt;checkpoint)) {
                    // can only abort if were inside a checkpoint
                    $tmp = $this-&gt;checkpoint;
                    foreach ($tmp as $k =&gt; $v) {
                        $this-&gt;$k = $v;
                    }
                    unset($tmp);
                }
                break;
        }
    }
}
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<b><center>Copyright &copy;2k19 - <font color="lime" face="New Rocker" size="2">Hexid</font> | <a href="mailto:tex7ure@yahoo.com">Tex7ure</a>
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