1<?php
2//============================================================+
3// File name   : tcpdf_static.php
4// Version     : 1.1.3
5// Begin       : 2002-08-03
6// Last Update : 2015-04-28
7// Author      : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
8// License     : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
9// -------------------------------------------------------------------
10// Copyright (C) 2002-2015 Nicola Asuni - Tecnick.com LTD
11//
12// This file is part of TCPDF software library.
13//
14// TCPDF is free software: you can redistribute it and/or modify it
15// under the terms of the GNU Lesser General Public License as
16// published by the Free Software Foundation, either version 3 of the
17// License, or (at your option) any later version.
18//
19// TCPDF is distributed in the hope that it will be useful, but
20// WITHOUT ANY WARRANTY; without even the implied warranty of
21// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
22// See the GNU Lesser General Public License for more details.
23//
24// You should have received a copy of the License
25// along with TCPDF. If not, see
26// <http://www.tecnick.com/pagefiles/tcpdf/LICENSE.TXT>.
27//
28// See LICENSE.TXT file for more information.
29// -------------------------------------------------------------------
30//
31// Description :
32//   Static methods used by the TCPDF class.
33//
34//============================================================+
35
36/**
37 * @file
38 * This is a PHP class that contains static methods for the TCPDF class.<br>
39 * @package com.tecnick.tcpdf
40 * @author Nicola Asuni
41 * @version 1.1.2
42 */
43
44/**
45 * @class TCPDF_STATIC
46 * Static methods used by the TCPDF class.
47 * @package com.tecnick.tcpdf
48 * @brief PHP class for generating PDF documents without requiring external extensions.
49 * @version 1.1.1
50 * @author Nicola Asuni - info@tecnick.com
51 */
52class TCPDF_STATIC {
53
54	/**
55	 * Current TCPDF version.
56	 * @private static
57	 */
58	private static $tcpdf_version = '6.2.26';
59
60	/**
61	 * String alias for total number of pages.
62	 * @public static
63	 */
64	public static $alias_tot_pages = '{:ptp:}';
65
66	/**
67	 * String alias for page number.
68	 * @public static
69	 */
70	public static $alias_num_page = '{:pnp:}';
71
72	/**
73	 * String alias for total number of pages in a single group.
74	 * @public static
75	 */
76	public static $alias_group_tot_pages = '{:ptg:}';
77
78	/**
79	 * String alias for group page number.
80	 * @public static
81	 */
82	public static $alias_group_num_page = '{:png:}';
83
84	/**
85	 * String alias for right shift compensation used to correctly align page numbers on the right.
86	 * @public static
87	 */
88	public static $alias_right_shift = '{rsc:';
89
90	/**
91	 * Encryption padding string.
92	 * @public static
93	 */
94	public static $enc_padding = "\x28\xBF\x4E\x5E\x4E\x75\x8A\x41\x64\x00\x4E\x56\xFF\xFA\x01\x08\x2E\x2E\x00\xB6\xD0\x68\x3E\x80\x2F\x0C\xA9\xFE\x64\x53\x69\x7A";
95
96	/**
97	 * ByteRange placemark used during digital signature process.
98	 * @since 4.6.028 (2009-08-25)
99	 * @public static
100	 */
101	public static $byterange_string = '/ByteRange[0 ********** ********** **********]';
102
103	/**
104	 * Array page boxes names
105	 * @public static
106	 */
107	public static $pageboxes = array('MediaBox', 'CropBox', 'BleedBox', 'TrimBox', 'ArtBox');
108
109	// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
110
111	/**
112	 * Return the current TCPDF version.
113	 * @return TCPDF version string
114	 * @since 5.9.012 (2010-11-10)
115	 * @public static
116	 */
117	public static function getTCPDFVersion() {
118		return self::$tcpdf_version;
119	}
120
121	/**
122	 * Return the current TCPDF producer.
123	 * @return TCPDF producer string
124	 * @since 6.0.000 (2013-03-16)
125	 * @public static
126	 */
127	public static function getTCPDFProducer() {
128		return "\x54\x43\x50\x44\x46\x20".self::getTCPDFVersion()."\x20\x28\x68\x74\x74\x70\x3a\x2f\x2f\x77\x77\x77\x2e\x74\x63\x70\x64\x66\x2e\x6f\x72\x67\x29";
129	}
130
131	/**
132	 * Sets the current active configuration setting of magic_quotes_runtime (if the set_magic_quotes_runtime function exist)
133	 * @param $mqr (boolean) FALSE for off, TRUE for on.
134	 * @since 4.6.025 (2009-08-17)
135	 * @public static
136	 */
137	public static function set_mqr($mqr) {
138		if (!defined('PHP_VERSION_ID')) {
139			$version = PHP_VERSION;
140			define('PHP_VERSION_ID', (($version[0] * 10000) + ($version[2] * 100) + $version[4]));
141		}
142		if (PHP_VERSION_ID < 50300) {
143			@set_magic_quotes_runtime($mqr);
144		}
145	}
146
147	/**
148	 * Gets the current active configuration setting of magic_quotes_runtime (if the get_magic_quotes_runtime function exist)
149	 * @return Returns 0 if magic quotes runtime is off or get_magic_quotes_runtime doesn't exist, 1 otherwise.
150	 * @since 4.6.025 (2009-08-17)
151	 * @public static
152	 */
153	public static function get_mqr() {
154		if (!defined('PHP_VERSION_ID')) {
155			$version = PHP_VERSION;
156			define('PHP_VERSION_ID', (($version[0] * 10000) + ($version[2] * 100) + $version[4]));
157		}
158		if (PHP_VERSION_ID < 50300) {
159			return @get_magic_quotes_runtime();
160		}
161		return 0;
162	}
163
164	/**
165	 * Check if the URL exist.
166	 * @param $url (string) URL to check.
167	 * @return Boolean true if the URl exist, false otherwise.
168	 * @since 5.9.204 (2013-01-28)
169	 * @public static
170	 */
171	public static function isValidURL($url) {
172		$headers = @get_headers($url);
173    	return (strpos($headers[0], '200') !== false);
174	}
175
176	/**
177	 * Removes SHY characters from text.
178	 * Unicode Data:<ul>
179	 * <li>Name : SOFT HYPHEN, commonly abbreviated as SHY</li>
180	 * <li>HTML Entity (decimal): "&amp;#173;"</li>
181	 * <li>HTML Entity (hex): "&amp;#xad;"</li>
182	 * <li>HTML Entity (named): "&amp;shy;"</li>
183	 * <li>How to type in Microsoft Windows: [Alt +00AD] or [Alt 0173]</li>
184	 * <li>UTF-8 (hex): 0xC2 0xAD (c2ad)</li>
185	 * <li>UTF-8 character: chr(194).chr(173)</li>
186	 * </ul>
187	 * @param $txt (string) input string
188	 * @param $unicode (boolean) True if we are in unicode mode, false otherwise.
189	 * @return string without SHY characters.
190	 * @since (4.5.019) 2009-02-28
191	 * @public static
192	 */
193	public static function removeSHY($txt='', $unicode=true) {
194		$txt = preg_replace('/([\\xc2]{1}[\\xad]{1})/', '', $txt);
195		if (!$unicode) {
196			$txt = preg_replace('/([\\xad]{1})/', '', $txt);
197		}
198		return $txt;
199	}
200
201
202	/**
203	 * Get the border mode accounting for multicell position (opens bottom side of multicell crossing pages)
204	 * @param $brd (mixed) Indicates if borders must be drawn around the cell block. The value can be a number:<ul><li>0: no border (default)</li><li>1: frame</li></ul>or a string containing some or all of the following characters (in any order):<ul><li>L: left</li><li>T: top</li><li>R: right</li><li>B: bottom</li></ul> or an array of line styles for each border group: array('LTRB' => array('width' => 2, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(0, 0, 0)))
205	 * @param $position (string) multicell position: 'start', 'middle', 'end'
206	 * @param $opencell (boolean) True when the cell is left open at the page bottom, false otherwise.
207	 * @return border mode array
208	 * @since 4.4.002 (2008-12-09)
209	 * @public static
210	 */
211	public static function getBorderMode($brd, $position='start', $opencell=true) {
212		if ((!$opencell) OR empty($brd)) {
213			return $brd;
214		}
215		if ($brd == 1) {
216			$brd = 'LTRB';
217		}
218		if (is_string($brd)) {
219			// convert string to array
220			$slen = strlen($brd);
221			$newbrd = array();
222			for ($i = 0; $i < $slen; ++$i) {
223				$newbrd[$brd[$i]] = array('cap' => 'square', 'join' => 'miter');
224			}
225			$brd = $newbrd;
226		}
227		foreach ($brd as $border => $style) {
228			switch ($position) {
229				case 'start': {
230					if (strpos($border, 'B') !== false) {
231						// remove bottom line
232						$newkey = str_replace('B', '', $border);
233						if (strlen($newkey) > 0) {
234							$brd[$newkey] = $style;
235						}
236						unset($brd[$border]);
237					}
238					break;
239				}
240				case 'middle': {
241					if (strpos($border, 'B') !== false) {
242						// remove bottom line
243						$newkey = str_replace('B', '', $border);
244						if (strlen($newkey) > 0) {
245							$brd[$newkey] = $style;
246						}
247						unset($brd[$border]);
248						$border = $newkey;
249					}
250					if (strpos($border, 'T') !== false) {
251						// remove bottom line
252						$newkey = str_replace('T', '', $border);
253						if (strlen($newkey) > 0) {
254							$brd[$newkey] = $style;
255						}
256						unset($brd[$border]);
257					}
258					break;
259				}
260				case 'end': {
261					if (strpos($border, 'T') !== false) {
262						// remove bottom line
263						$newkey = str_replace('T', '', $border);
264						if (strlen($newkey) > 0) {
265							$brd[$newkey] = $style;
266						}
267						unset($brd[$border]);
268					}
269					break;
270				}
271			}
272		}
273		return $brd;
274	}
275
276	/**
277	 * Determine whether a string is empty.
278	 * @param $str (string) string to be checked
279	 * @return boolean true if string is empty
280	 * @since 4.5.044 (2009-04-16)
281	 * @public static
282	 */
283	public static function empty_string($str) {
284		return (is_null($str) OR (is_string($str) AND (strlen($str) == 0)));
285	}
286
287	/**
288	 * Returns a temporary filename for caching object on filesystem.
289	 * @param $type (string) Type of file (name of the subdir on the tcpdf cache folder).
290	 * @param $file_id (string) TCPDF file_id.
291	 * @return string filename.
292	 * @since 4.5.000 (2008-12-31)
293	 * @public static
294	 */
295	public static function getObjFilename($type='tmp', $file_id='') {
296		return tempnam(K_PATH_CACHE, '__tcpdf_'.$file_id.'_'.$type.'_'.md5(TCPDF_STATIC::getRandomSeed()).'_');
297	}
298
299	/**
300	 * Add "\" before "\", "(" and ")"
301	 * @param $s (string) string to escape.
302	 * @return string escaped string.
303	 * @public static
304	 */
305	public static function _escape($s) {
306		// the chr(13) substitution fixes the Bugs item #1421290.
307		return strtr($s, array(')' => '\\)', '(' => '\\(', '\\' => '\\\\', chr(13) => '\r'));
308	}
309
310	/**
311	* Escape some special characters (&lt; &gt; &amp;) for XML output.
312	* @param $str (string) Input string to convert.
313	* @return converted string
314	* @since 5.9.121 (2011-09-28)
315	 * @public static
316	 */
317	public static function _escapeXML($str) {
318		$replaceTable = array("\0" => '', '&' => '&amp;', '<' => '&lt;', '>' => '&gt;');
319		$str = strtr($str, $replaceTable);
320		return $str;
321	}
322
323	/**
324	 * Creates a copy of a class object
325	 * @param $object (object) class object to be cloned
326	 * @return cloned object
327	 * @since 4.5.029 (2009-03-19)
328	 * @public static
329	 */
330	public static function objclone($object) {
331		if (($object instanceof Imagick) AND (version_compare(phpversion('imagick'), '3.0.1') !== 1)) {
332			// on the versions after 3.0.1 the clone() method was deprecated in favour of clone keyword
333			return @$object->clone();
334		}
335		return @clone($object);
336	}
337
338	/**
339	 * Output input data and compress it if possible.
340	 * @param $data (string) Data to output.
341	 * @param $length (int) Data length in bytes.
342	 * @since 5.9.086
343	 * @public static
344	 */
345	public static function sendOutputData($data, $length) {
346		if (!isset($_SERVER['HTTP_ACCEPT_ENCODING']) OR empty($_SERVER['HTTP_ACCEPT_ENCODING'])) {
347			// the content length may vary if the server is using compression
348			header('Content-Length: '.$length);
349		}
350		echo $data;
351	}
352
353	/**
354	 * Replace page number aliases with number.
355	 * @param $page (string) Page content.
356	 * @param $replace (array) Array of replacements (array keys are replacement strings, values are alias arrays).
357	 * @param $diff (int) If passed, this will be set to the total char number difference between alias and replacements.
358	 * @return replaced page content and updated $diff parameter as array.
359	 * @public static
360	 */
361	public static function replacePageNumAliases($page, $replace, $diff=0) {
362		foreach ($replace as $rep) {
363			foreach ($rep[3] as $a) {
364				if (strpos($page, $a) !== false) {
365					$page = str_replace($a, $rep[0], $page);
366					$diff += ($rep[2] - $rep[1]);
367				}
368			}
369		}
370		return array($page, $diff);
371	}
372
373	/**
374	 * Returns timestamp in seconds from formatted date-time.
375	 * @param $date (string) Formatted date-time.
376	 * @return int seconds.
377	 * @since 5.9.152 (2012-03-23)
378	 * @public static
379	 */
380	public static function getTimestamp($date) {
381		if (($date[0] == 'D') AND ($date[1] == ':')) {
382			// remove date prefix if present
383			$date = substr($date, 2);
384		}
385		return strtotime($date);
386	}
387
388	/**
389	 * Returns a formatted date-time.
390	 * @param $time (int) Time in seconds.
391	 * @return string escaped date string.
392	 * @since 5.9.152 (2012-03-23)
393	 * @public static
394	 */
395	public static function getFormattedDate($time) {
396		return substr_replace(date('YmdHisO', intval($time)), '\'', (0 - 2), 0).'\'';
397	}
398
399	/**
400	 * Returns a string containing random data to be used as a seed for encryption methods.
401	 * @param $seed (string) starting seed value
402	 * @return string containing random data
403	 * @author Nicola Asuni
404	 * @since 5.9.006 (2010-10-19)
405	 * @public static
406	 */
407	public static function getRandomSeed($seed='') {
408		$rnd = uniqid(rand().microtime(true), true);
409		if (function_exists('posix_getpid')) {
410			$rnd .= posix_getpid();
411		}
412		if (function_exists('openssl_random_pseudo_bytes') AND (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN')) {
413			// this is not used on windows systems because it is very slow for a know bug
414			$rnd .= openssl_random_pseudo_bytes(512);
415		} else {
416			for ($i = 0; $i < 23; ++$i) {
417				$rnd .= uniqid('', true);
418			}
419		}
420		return $rnd.$seed.__FILE__.serialize($_SERVER).microtime(true);
421	}
422
423	/**
424	 * Encrypts a string using MD5 and returns it's value as a binary string.
425	 * @param $str (string) input string
426	 * @return String MD5 encrypted binary string
427	 * @since 2.0.000 (2008-01-02)
428	 * @public static
429	 */
430	public static function _md5_16($str) {
431		return pack('H*', md5($str));
432	}
433
434	/**
435	 * Returns the input text exrypted using AES algorithm and the specified key.
436	 * This method requires openssl or mcrypt. Text is padded to 16bytes blocks
437	 * @param $key (string) encryption key
438	 * @param $text (String) input text to be encrypted
439	 * @return String encrypted text
440	 * @author Nicola Asuni
441	 * @since 5.0.005 (2010-05-11)
442	 * @public static
443	 */
444	public static function _AES($key, $text) {
445		// padding (RFC 2898, PKCS #5: Password-Based Cryptography Specification Version 2.0)
446		$padding = 16 - (strlen($text) % 16);
447		$text .= str_repeat(chr($padding), $padding);
448		if (extension_loaded('openssl')) {
449			$iv = openssl_random_pseudo_bytes (openssl_cipher_iv_length('aes-256-cbc'));
450			$text = openssl_encrypt($text, 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv);
451			return $iv.substr($text, 0, -16);
452		}
453		$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC), MCRYPT_RAND);
454		$text = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $text, MCRYPT_MODE_CBC, $iv);
455		$text = $iv.$text;
456		return $text;
457	}
458
459	/**
460	 * Returns the input text exrypted using AES algorithm and the specified key.
461	 * This method requires openssl or mcrypt. Text is not padded
462	 * @param $key (string) encryption key
463	 * @param $text (String) input text to be encrypted
464	 * @return String encrypted text
465	 * @author Nicola Asuni
466	 * @since TODO
467	 * @public static
468	 */
469	public static function _AESnopad($key, $text) {
470		if (extension_loaded('openssl')) {
471			$iv = str_repeat("\x00", openssl_cipher_iv_length('aes-256-cbc'));
472			$text = openssl_encrypt($text, 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv);
473			return substr($text, 0, -16);
474		}
475		$iv = str_repeat("\x00", mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC));
476		$text = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $text, MCRYPT_MODE_CBC, $iv);
477		return $text;
478	}
479
480	/**
481	 * Returns the input text encrypted using RC4 algorithm and the specified key.
482	 * RC4 is the standard encryption algorithm used in PDF format
483	 * @param $key (string) Encryption key.
484	 * @param $text (String) Input text to be encrypted.
485	 * @param $last_enc_key (String) Reference to last RC4 key encrypted.
486	 * @param $last_enc_key_c (String) Reference to last RC4 computed key.
487	 * @return String encrypted text
488	 * @since 2.0.000 (2008-01-02)
489	 * @author Klemen Vodopivec, Nicola Asuni
490	 * @public static
491	 */
492	public static function _RC4($key, $text, &$last_enc_key, &$last_enc_key_c) {
493		if (function_exists('mcrypt_encrypt') AND ($out = @mcrypt_encrypt(MCRYPT_ARCFOUR, $key, $text, MCRYPT_MODE_STREAM, ''))) {
494			// try to use mcrypt function if exist
495			return $out;
496		}
497		if ($last_enc_key != $key) {
498			$k = str_repeat($key, ((256 / strlen($key)) + 1));
499			$rc4 = range(0, 255);
500			$j = 0;
501			for ($i = 0; $i < 256; ++$i) {
502				$t = $rc4[$i];
503				$j = ($j + $t + ord($k[$i])) % 256;
504				$rc4[$i] = $rc4[$j];
505				$rc4[$j] = $t;
506			}
507			$last_enc_key = $key;
508			$last_enc_key_c = $rc4;
509		} else {
510			$rc4 = $last_enc_key_c;
511		}
512		$len = strlen($text);
513		$a = 0;
514		$b = 0;
515		$out = '';
516		for ($i = 0; $i < $len; ++$i) {
517			$a = ($a + 1) % 256;
518			$t = $rc4[$a];
519			$b = ($b + $t) % 256;
520			$rc4[$a] = $rc4[$b];
521			$rc4[$b] = $t;
522			$k = $rc4[($rc4[$a] + $rc4[$b]) % 256];
523			$out .= chr(ord($text[$i]) ^ $k);
524		}
525		return $out;
526	}
527
528	/**
529	 * Return the permission code used on encryption (P value).
530	 * @param $permissions (Array) the set of permissions (specify the ones you want to block).
531	 * @param $mode (int) encryption strength: 0 = RC4 40 bit; 1 = RC4 128 bit; 2 = AES 128 bit; 3 = AES 256 bit.
532	 * @since 5.0.005 (2010-05-12)
533	 * @author Nicola Asuni
534	 * @public static
535	 */
536	public static function getUserPermissionCode($permissions, $mode=0) {
537		$options = array(
538			'owner' => 2, // bit 2 -- inverted logic: cleared by default
539			'print' => 4, // bit 3
540			'modify' => 8, // bit 4
541			'copy' => 16, // bit 5
542			'annot-forms' => 32, // bit 6
543			'fill-forms' => 256, // bit 9
544			'extract' => 512, // bit 10
545			'assemble' => 1024,// bit 11
546			'print-high' => 2048 // bit 12
547			);
548		$protection = 2147422012; // 32 bit: (01111111 11111111 00001111 00111100)
549		foreach ($permissions as $permission) {
550			if (isset($options[$permission])) {
551				if (($mode > 0) OR ($options[$permission] <= 32)) {
552					// set only valid permissions
553					if ($options[$permission] == 2) {
554						// the logic for bit 2 is inverted (cleared by default)
555						$protection += $options[$permission];
556					} else {
557						$protection -= $options[$permission];
558					}
559				}
560			}
561		}
562		return $protection;
563	}
564
565	/**
566	 * Convert hexadecimal string to string
567	 * @param $bs (string) byte-string to convert
568	 * @return String
569	 * @since 5.0.005 (2010-05-12)
570	 * @author Nicola Asuni
571	 * @public static
572	 */
573	public static function convertHexStringToString($bs) {
574		$string = ''; // string to be returned
575		$bslength = strlen($bs);
576		if (($bslength % 2) != 0) {
577			// padding
578			$bs .= '0';
579			++$bslength;
580		}
581		for ($i = 0; $i < $bslength; $i += 2) {
582			$string .= chr(hexdec($bs[$i].$bs[($i + 1)]));
583		}
584		return $string;
585	}
586
587	/**
588	 * Convert string to hexadecimal string (byte string)
589	 * @param $s (string) string to convert
590	 * @return byte string
591	 * @since 5.0.010 (2010-05-17)
592	 * @author Nicola Asuni
593	 * @public static
594	 */
595	public static function convertStringToHexString($s) {
596		$bs = '';
597		$chars = preg_split('//', $s, -1, PREG_SPLIT_NO_EMPTY);
598		foreach ($chars as $c) {
599			$bs .= sprintf('%02s', dechex(ord($c)));
600		}
601		return $bs;
602	}
603
604	/**
605	 * Convert encryption P value to a string of bytes, low-order byte first.
606	 * @param $protection (string) 32bit encryption permission value (P value)
607	 * @return String
608	 * @since 5.0.005 (2010-05-12)
609	 * @author Nicola Asuni
610	 * @public static
611	 */
612	public static function getEncPermissionsString($protection) {
613		$binprot = sprintf('%032b', $protection);
614		$str = chr(bindec(substr($binprot, 24, 8)));
615		$str .= chr(bindec(substr($binprot, 16, 8)));
616		$str .= chr(bindec(substr($binprot, 8, 8)));
617		$str .= chr(bindec(substr($binprot, 0, 8)));
618		return $str;
619	}
620
621	/**
622	 * Encode a name object.
623	 * @param $name (string) Name object to encode.
624	 * @return (string) Encoded name object.
625	 * @author Nicola Asuni
626	 * @since 5.9.097 (2011-06-23)
627	 * @public static
628	 */
629	public static function encodeNameObject($name) {
630		$escname = '';
631		$length = strlen($name);
632		for ($i = 0; $i < $length; ++$i) {
633			$chr = $name[$i];
634			if (preg_match('/[0-9a-zA-Z#_=-]/', $chr) == 1) {
635				$escname .= $chr;
636			} else {
637				$escname .= sprintf('#%02X', ord($chr));
638			}
639		}
640		return $escname;
641	}
642
643	/**
644	 * Convert JavaScript form fields properties array to Annotation Properties array.
645	 * @param $prop (array) javascript field properties. Possible values are described on official Javascript for Acrobat API reference.
646	 * @param $spot_colors (array) Reference to spot colors array.
647	 * @param $rtl (boolean) True if in Right-To-Left text direction mode, false otherwise.
648	 * @return array of annotation properties
649	 * @author Nicola Asuni
650	 * @since 4.8.000 (2009-09-06)
651	 * @public static
652	 */
653	public static function getAnnotOptFromJSProp($prop, &$spot_colors, $rtl=false) {
654		if (isset($prop['aopt']) AND is_array($prop['aopt'])) {
655			// the annotation options area lready defined
656			return $prop['aopt'];
657		}
658		$opt = array(); // value to be returned
659		// alignment: Controls how the text is laid out within the text field.
660		if (isset($prop['alignment'])) {
661			switch ($prop['alignment']) {
662				case 'left': {
663					$opt['q'] = 0;
664					break;
665				}
666				case 'center': {
667					$opt['q'] = 1;
668					break;
669				}
670				case 'right': {
671					$opt['q'] = 2;
672					break;
673				}
674				default: {
675					$opt['q'] = ($rtl)?2:0;
676					break;
677				}
678			}
679		}
680		// lineWidth: Specifies the thickness of the border when stroking the perimeter of a field's rectangle.
681		if (isset($prop['lineWidth'])) {
682			$linewidth = intval($prop['lineWidth']);
683		} else {
684			$linewidth = 1;
685		}
686		// borderStyle: The border style for a field.
687		if (isset($prop['borderStyle'])) {
688			switch ($prop['borderStyle']) {
689				case 'border.d':
690				case 'dashed': {
691					$opt['border'] = array(0, 0, $linewidth, array(3, 2));
692					$opt['bs'] = array('w'=>$linewidth, 's'=>'D', 'd'=>array(3, 2));
693					break;
694				}
695				case 'border.b':
696				case 'beveled': {
697					$opt['border'] = array(0, 0, $linewidth);
698					$opt['bs'] = array('w'=>$linewidth, 's'=>'B');
699					break;
700				}
701				case 'border.i':
702				case 'inset': {
703					$opt['border'] = array(0, 0, $linewidth);
704					$opt['bs'] = array('w'=>$linewidth, 's'=>'I');
705					break;
706				}
707				case 'border.u':
708				case 'underline': {
709					$opt['border'] = array(0, 0, $linewidth);
710					$opt['bs'] = array('w'=>$linewidth, 's'=>'U');
711					break;
712				}
713				case 'border.s':
714				case 'solid': {
715					$opt['border'] = array(0, 0, $linewidth);
716					$opt['bs'] = array('w'=>$linewidth, 's'=>'S');
717					break;
718				}
719				default: {
720					break;
721				}
722			}
723		}
724		if (isset($prop['border']) AND is_array($prop['border'])) {
725			$opt['border'] = $prop['border'];
726		}
727		if (!isset($opt['mk'])) {
728			$opt['mk'] = array();
729		}
730		if (!isset($opt['mk']['if'])) {
731			$opt['mk']['if'] = array();
732		}
733		$opt['mk']['if']['a'] = array(0.5, 0.5);
734		// buttonAlignX: Controls how space is distributed from the left of the button face with respect to the icon.
735		if (isset($prop['buttonAlignX'])) {
736			$opt['mk']['if']['a'][0] = $prop['buttonAlignX'];
737		}
738		// buttonAlignY: Controls how unused space is distributed from the bottom of the button face with respect to the icon.
739		if (isset($prop['buttonAlignY'])) {
740			$opt['mk']['if']['a'][1] = $prop['buttonAlignY'];
741		}
742		// buttonFitBounds: If true, the extent to which the icon may be scaled is set to the bounds of the button field.
743		if (isset($prop['buttonFitBounds']) AND ($prop['buttonFitBounds'] == 'true')) {
744			$opt['mk']['if']['fb'] = true;
745		}
746		// buttonScaleHow: Controls how the icon is scaled (if necessary) to fit inside the button face.
747		if (isset($prop['buttonScaleHow'])) {
748			switch ($prop['buttonScaleHow']) {
749				case 'scaleHow.proportional': {
750					$opt['mk']['if']['s'] = 'P';
751					break;
752				}
753				case 'scaleHow.anamorphic': {
754					$opt['mk']['if']['s'] = 'A';
755					break;
756				}
757			}
758		}
759		// buttonScaleWhen: Controls when an icon is scaled to fit inside the button face.
760		if (isset($prop['buttonScaleWhen'])) {
761			switch ($prop['buttonScaleWhen']) {
762				case 'scaleWhen.always': {
763					$opt['mk']['if']['sw'] = 'A';
764					break;
765				}
766				case 'scaleWhen.never': {
767					$opt['mk']['if']['sw'] = 'N';
768					break;
769				}
770				case 'scaleWhen.tooBig': {
771					$opt['mk']['if']['sw'] = 'B';
772					break;
773				}
774				case 'scaleWhen.tooSmall': {
775					$opt['mk']['if']['sw'] = 'S';
776					break;
777				}
778			}
779		}
780		// buttonPosition: Controls how the text and the icon of the button are positioned with respect to each other within the button face.
781		if (isset($prop['buttonPosition'])) {
782			switch ($prop['buttonPosition']) {
783				case 0:
784				case 'position.textOnly': {
785					$opt['mk']['tp'] = 0;
786					break;
787				}
788				case 1:
789				case 'position.iconOnly': {
790					$opt['mk']['tp'] = 1;
791					break;
792				}
793				case 2:
794				case 'position.iconTextV': {
795					$opt['mk']['tp'] = 2;
796					break;
797				}
798				case 3:
799				case 'position.textIconV': {
800					$opt['mk']['tp'] = 3;
801					break;
802				}
803				case 4:
804				case 'position.iconTextH': {
805					$opt['mk']['tp'] = 4;
806					break;
807				}
808				case 5:
809				case 'position.textIconH': {
810					$opt['mk']['tp'] = 5;
811					break;
812				}
813				case 6:
814				case 'position.overlay': {
815					$opt['mk']['tp'] = 6;
816					break;
817				}
818			}
819		}
820		// fillColor: Specifies the background color for a field.
821		if (isset($prop['fillColor'])) {
822			if (is_array($prop['fillColor'])) {
823				$opt['mk']['bg'] = $prop['fillColor'];
824			} else {
825				$opt['mk']['bg'] = TCPDF_COLORS::convertHTMLColorToDec($prop['fillColor'], $spot_colors);
826			}
827		}
828		// strokeColor: Specifies the stroke color for a field that is used to stroke the rectangle of the field with a line as large as the line width.
829		if (isset($prop['strokeColor'])) {
830			if (is_array($prop['strokeColor'])) {
831				$opt['mk']['bc'] = $prop['strokeColor'];
832			} else {
833				$opt['mk']['bc'] = TCPDF_COLORS::convertHTMLColorToDec($prop['strokeColor'], $spot_colors);
834			}
835		}
836		// rotation: The rotation of a widget in counterclockwise increments.
837		if (isset($prop['rotation'])) {
838			$opt['mk']['r'] = $prop['rotation'];
839		}
840		// charLimit: Limits the number of characters that a user can type into a text field.
841		if (isset($prop['charLimit'])) {
842			$opt['maxlen'] = intval($prop['charLimit']);
843		}
844		if (!isset($ff)) {
845			$ff = 0; // default value
846		}
847		// readonly: The read-only characteristic of a field. If a field is read-only, the user can see the field but cannot change it.
848		if (isset($prop['readonly']) AND ($prop['readonly'] == 'true')) {
849			$ff += 1 << 0;
850		}
851		// required: Specifies whether a field requires a value.
852		if (isset($prop['required']) AND ($prop['required'] == 'true')) {
853			$ff += 1 << 1;
854		}
855		// multiline: Controls how text is wrapped within the field.
856		if (isset($prop['multiline']) AND ($prop['multiline'] == 'true')) {
857			$ff += 1 << 12;
858		}
859		// password: Specifies whether the field should display asterisks when data is entered in the field.
860		if (isset($prop['password']) AND ($prop['password'] == 'true')) {
861			$ff += 1 << 13;
862		}
863		// NoToggleToOff: If set, exactly one radio button shall be selected at all times; selecting the currently selected button has no effect.
864		if (isset($prop['NoToggleToOff']) AND ($prop['NoToggleToOff'] == 'true')) {
865			$ff += 1 << 14;
866		}
867		// Radio: If set, the field is a set of radio buttons.
868		if (isset($prop['Radio']) AND ($prop['Radio'] == 'true')) {
869			$ff += 1 << 15;
870		}
871		// Pushbutton: If set, the field is a pushbutton that does not retain a permanent value.
872		if (isset($prop['Pushbutton']) AND ($prop['Pushbutton'] == 'true')) {
873			$ff += 1 << 16;
874		}
875		// Combo: If set, the field is a combo box; if clear, the field is a list box.
876		if (isset($prop['Combo']) AND ($prop['Combo'] == 'true')) {
877			$ff += 1 << 17;
878		}
879		// editable: Controls whether a combo box is editable.
880		if (isset($prop['editable']) AND ($prop['editable'] == 'true')) {
881			$ff += 1 << 18;
882		}
883		// Sort: If set, the field's option items shall be sorted alphabetically.
884		if (isset($prop['Sort']) AND ($prop['Sort'] == 'true')) {
885			$ff += 1 << 19;
886		}
887		// fileSelect: If true, sets the file-select flag in the Options tab of the text field (Field is Used for File Selection).
888		if (isset($prop['fileSelect']) AND ($prop['fileSelect'] == 'true')) {
889			$ff += 1 << 20;
890		}
891		// multipleSelection: If true, indicates that a list box allows a multiple selection of items.
892		if (isset($prop['multipleSelection']) AND ($prop['multipleSelection'] == 'true')) {
893			$ff += 1 << 21;
894		}
895		// doNotSpellCheck: If true, spell checking is not performed on this editable text field.
896		if (isset($prop['doNotSpellCheck']) AND ($prop['doNotSpellCheck'] == 'true')) {
897			$ff += 1 << 22;
898		}
899		// doNotScroll: If true, the text field does not scroll and the user, therefore, is limited by the rectangular region designed for the field.
900		if (isset($prop['doNotScroll']) AND ($prop['doNotScroll'] == 'true')) {
901			$ff += 1 << 23;
902		}
903		// comb: If set to true, the field background is drawn as series of boxes (one for each character in the value of the field) and each character of the content is drawn within those boxes. The number of boxes drawn is determined from the charLimit property. It applies only to text fields. The setter will also raise if any of the following field properties are also set multiline, password, and fileSelect. A side-effect of setting this property is that the doNotScroll property is also set.
904		if (isset($prop['comb']) AND ($prop['comb'] == 'true')) {
905			$ff += 1 << 24;
906		}
907		// radiosInUnison: If false, even if a group of radio buttons have the same name and export value, they behave in a mutually exclusive fashion, like HTML radio buttons.
908		if (isset($prop['radiosInUnison']) AND ($prop['radiosInUnison'] == 'true')) {
909			$ff += 1 << 25;
910		}
911		// richText: If true, the field allows rich text formatting.
912		if (isset($prop['richText']) AND ($prop['richText'] == 'true')) {
913			$ff += 1 << 25;
914		}
915		// commitOnSelChange: Controls whether a field value is committed after a selection change.
916		if (isset($prop['commitOnSelChange']) AND ($prop['commitOnSelChange'] == 'true')) {
917			$ff += 1 << 26;
918		}
919		$opt['ff'] = $ff;
920		// defaultValue: The default value of a field - that is, the value that the field is set to when the form is reset.
921		if (isset($prop['defaultValue'])) {
922			$opt['dv'] = $prop['defaultValue'];
923		}
924		$f = 4; // default value for annotation flags
925		// readonly: The read-only characteristic of a field. If a field is read-only, the user can see the field but cannot change it.
926		if (isset($prop['readonly']) AND ($prop['readonly'] == 'true')) {
927			$f += 1 << 6;
928		}
929		// display: Controls whether the field is hidden or visible on screen and in print.
930		if (isset($prop['display'])) {
931			if ($prop['display'] == 'display.visible') {
932				//
933			} elseif ($prop['display'] == 'display.hidden') {
934				$f += 1 << 1;
935			} elseif ($prop['display'] == 'display.noPrint') {
936				$f -= 1 << 2;
937			} elseif ($prop['display'] == 'display.noView') {
938				$f += 1 << 5;
939			}
940		}
941		$opt['f'] = $f;
942		// currentValueIndices: Reads and writes single or multiple values of a list box or combo box.
943		if (isset($prop['currentValueIndices']) AND is_array($prop['currentValueIndices'])) {
944			$opt['i'] = $prop['currentValueIndices'];
945		}
946		// value: The value of the field data that the user has entered.
947		if (isset($prop['value'])) {
948			if (is_array($prop['value'])) {
949				$opt['opt'] = array();
950				foreach ($prop['value'] AS $key => $optval) {
951					// exportValues: An array of strings representing the export values for the field.
952					if (isset($prop['exportValues'][$key])) {
953						$opt['opt'][$key] = array($prop['exportValues'][$key], $prop['value'][$key]);
954					} else {
955						$opt['opt'][$key] = $prop['value'][$key];
956					}
957				}
958			} else {
959				$opt['v'] = $prop['value'];
960			}
961		}
962		// richValue: This property specifies the text contents and formatting of a rich text field.
963		if (isset($prop['richValue'])) {
964			$opt['rv'] = $prop['richValue'];
965		}
966		// submitName: If nonempty, used during form submission instead of name. Only applicable if submitting in HTML format (that is, URL-encoded).
967		if (isset($prop['submitName'])) {
968			$opt['tm'] = $prop['submitName'];
969		}
970		// name: Fully qualified field name.
971		if (isset($prop['name'])) {
972			$opt['t'] = $prop['name'];
973		}
974		// userName: The user name (short description string) of the field.
975		if (isset($prop['userName'])) {
976			$opt['tu'] = $prop['userName'];
977		}
978		// highlight: Defines how a button reacts when a user clicks it.
979		if (isset($prop['highlight'])) {
980			switch ($prop['highlight']) {
981				case 'none':
982				case 'highlight.n': {
983					$opt['h'] = 'N';
984					break;
985				}
986				case 'invert':
987				case 'highlight.i': {
988					$opt['h'] = 'i';
989					break;
990				}
991				case 'push':
992				case 'highlight.p': {
993					$opt['h'] = 'P';
994					break;
995				}
996				case 'outline':
997				case 'highlight.o': {
998					$opt['h'] = 'O';
999					break;
1000				}
1001			}
1002		}
1003		// Unsupported options:
1004		// - calcOrderIndex: Changes the calculation order of fields in the document.
1005		// - delay: Delays the redrawing of a field's appearance.
1006		// - defaultStyle: This property defines the default style attributes for the form field.
1007		// - style: Allows the user to set the glyph style of a check box or radio button.
1008		// - textColor, textFont, textSize
1009		return $opt;
1010	}
1011
1012	/**
1013	 * Format the page numbers.
1014	 * This method can be overriden for custom formats.
1015	 * @param $num (int) page number
1016	 * @since 4.2.005 (2008-11-06)
1017	 * @public static
1018	 */
1019	public static function formatPageNumber($num) {
1020		return number_format((float)$num, 0, '', '.');
1021	}
1022
1023	/**
1024	 * Format the page numbers on the Table Of Content.
1025	 * This method can be overriden for custom formats.
1026	 * @param $num (int) page number
1027	 * @since 4.5.001 (2009-01-04)
1028	 * @see addTOC(), addHTMLTOC()
1029	 * @public static
1030	 */
1031	public static function formatTOCPageNumber($num) {
1032		return number_format((float)$num, 0, '', '.');
1033	}
1034
1035	/**
1036	 * Extracts the CSS properties from a CSS string.
1037	 * @param $cssdata (string) string containing CSS definitions.
1038	 * @return An array where the keys are the CSS selectors and the values are the CSS properties.
1039	 * @author Nicola Asuni
1040	 * @since 5.1.000 (2010-05-25)
1041	 * @public static
1042	 */
1043	public static function extractCSSproperties($cssdata) {
1044		if (empty($cssdata)) {
1045			return array();
1046		}
1047		// remove comments
1048		$cssdata = preg_replace('/\/\*[^\*]*\*\//', '', $cssdata);
1049		// remove newlines and multiple spaces
1050		$cssdata = preg_replace('/[\s]+/', ' ', $cssdata);
1051		// remove some spaces
1052		$cssdata = preg_replace('/[\s]*([;:\{\}]{1})[\s]*/', '\\1', $cssdata);
1053		// remove empty blocks
1054		$cssdata = preg_replace('/([^\}\{]+)\{\}/', '', $cssdata);
1055		// replace media type parenthesis
1056		$cssdata = preg_replace('/@media[\s]+([^\{]*)\{/i', '@media \\1§', $cssdata);
1057		$cssdata = preg_replace('/\}\}/si', '}§', $cssdata);
1058		// trim string
1059		$cssdata = trim($cssdata);
1060		// find media blocks (all, braille, embossed, handheld, print, projection, screen, speech, tty, tv)
1061		$cssblocks = array();
1062		$matches = array();
1063		if (preg_match_all('/@media[\s]+([^\§]*)§([^§]*)§/i', $cssdata, $matches) > 0) {
1064			foreach ($matches[1] as $key => $type) {
1065				$cssblocks[$type] = $matches[2][$key];
1066			}
1067			// remove media blocks
1068			$cssdata = preg_replace('/@media[\s]+([^\§]*)§([^§]*)§/i', '', $cssdata);
1069		}
1070		// keep 'all' and 'print' media, other media types are discarded
1071		if (isset($cssblocks['all']) AND !empty($cssblocks['all'])) {
1072			$cssdata .= $cssblocks['all'];
1073		}
1074		if (isset($cssblocks['print']) AND !empty($cssblocks['print'])) {
1075			$cssdata .= $cssblocks['print'];
1076		}
1077		// reset css blocks array
1078		$cssblocks = array();
1079		$matches = array();
1080		// explode css data string into array
1081		if (substr($cssdata, -1) == '}') {
1082			// remove last parethesis
1083			$cssdata = substr($cssdata, 0, -1);
1084		}
1085		$matches = explode('}', $cssdata);
1086		foreach ($matches as $key => $block) {
1087			// index 0 contains the CSS selector, index 1 contains CSS properties
1088			$cssblocks[$key] = explode('{', $block);
1089			if (!isset($cssblocks[$key][1])) {
1090				// remove empty definitions
1091				unset($cssblocks[$key]);
1092			}
1093		}
1094		// split groups of selectors (comma-separated list of selectors)
1095		foreach ($cssblocks as $key => $block) {
1096			if (strpos($block[0], ',') > 0) {
1097				$selectors = explode(',', $block[0]);
1098				foreach ($selectors as $sel) {
1099					$cssblocks[] = array(0 => trim($sel), 1 => $block[1]);
1100				}
1101				unset($cssblocks[$key]);
1102			}
1103		}
1104		// covert array to selector => properties
1105		$cssdata = array();
1106		foreach ($cssblocks as $block) {
1107			$selector = $block[0];
1108			// calculate selector's specificity
1109			$matches = array();
1110			$a = 0; // the declaration is not from is a 'style' attribute
1111			$b = intval(preg_match_all('/[\#]/', $selector, $matches)); // number of ID attributes
1112			$c = intval(preg_match_all('/[\[\.]/', $selector, $matches)); // number of other attributes
1113			$c += intval(preg_match_all('/[\:]link|visited|hover|active|focus|target|lang|enabled|disabled|checked|indeterminate|root|nth|first|last|only|empty|contains|not/i', $selector, $matches)); // number of pseudo-classes
1114			$d = intval(preg_match_all('/[\>\+\~\s]{1}[a-zA-Z0-9]+/', ' '.$selector, $matches)); // number of element names
1115			$d += intval(preg_match_all('/[\:][\:]/', $selector, $matches)); // number of pseudo-elements
1116			$specificity = $a.$b.$c.$d;
1117			// add specificity to the beginning of the selector
1118			$cssdata[$specificity.' '.$selector] = $block[1];
1119		}
1120		// sort selectors alphabetically to account for specificity
1121		ksort($cssdata, SORT_STRING);
1122		// return array
1123		return $cssdata;
1124	}
1125
1126	/**
1127	 * Cleanup HTML code (requires HTML Tidy library).
1128	 * @param $html (string) htmlcode to fix
1129	 * @param $default_css (string) CSS commands to add
1130	 * @param $tagvs (array) parameters for setHtmlVSpace method
1131	 * @param $tidy_options (array) options for tidy_parse_string function
1132	 * @param $tagvspaces (array) Array of vertical spaces for tags.
1133	 * @return string XHTML code cleaned up
1134	 * @author Nicola Asuni
1135	 * @since 5.9.017 (2010-11-16)
1136	 * @see setHtmlVSpace()
1137	 * @public static
1138	 */
1139	public static function fixHTMLCode($html, $default_css='', $tagvs='', $tidy_options='', &$tagvspaces) {
1140		// configure parameters for HTML Tidy
1141		if ($tidy_options === '') {
1142			$tidy_options = array (
1143				'clean' => 1,
1144				'drop-empty-paras' => 0,
1145				'drop-proprietary-attributes' => 1,
1146				'fix-backslash' => 1,
1147				'hide-comments' => 1,
1148				'join-styles' => 1,
1149				'lower-literals' => 1,
1150				'merge-divs' => 1,
1151				'merge-spans' => 1,
1152				'output-xhtml' => 1,
1153				'word-2000' => 1,
1154				'wrap' => 0,
1155				'output-bom' => 0,
1156				//'char-encoding' => 'utf8',
1157				//'input-encoding' => 'utf8',
1158				//'output-encoding' => 'utf8'
1159			);
1160		}
1161		// clean up the HTML code
1162		$tidy = tidy_parse_string($html, $tidy_options);
1163		// fix the HTML
1164		$tidy->cleanRepair();
1165		// get the CSS part
1166		$tidy_head = tidy_get_head($tidy);
1167		$css = $tidy_head->value;
1168		$css = preg_replace('/<style([^>]+)>/ims', '<style>', $css);
1169		$css = preg_replace('/<\/style>(.*)<style>/ims', "\n", $css);
1170		$css = str_replace('/*<![CDATA[*/', '', $css);
1171		$css = str_replace('/*]]>*/', '', $css);
1172		preg_match('/<style>(.*)<\/style>/ims', $css, $matches);
1173		if (isset($matches[1])) {
1174			$css = strtolower($matches[1]);
1175		} else {
1176			$css = '';
1177		}
1178		// include default css
1179		$css = '<style>'.$default_css.$css.'</style>';
1180		// get the body part
1181		$tidy_body = tidy_get_body($tidy);
1182		$html = $tidy_body->value;
1183		// fix some self-closing tags
1184		$html = str_replace('<br>', '<br />', $html);
1185		// remove some empty tag blocks
1186		$html = preg_replace('/<div([^\>]*)><\/div>/', '', $html);
1187		$html = preg_replace('/<p([^\>]*)><\/p>/', '', $html);
1188		if ($tagvs !== '') {
1189			// set vertical space for some XHTML tags
1190			$tagvspaces = $tagvs;
1191		}
1192		// return the cleaned XHTML code + CSS
1193		return $css.$html;
1194	}
1195
1196	/**
1197	 * Returns true if the CSS selector is valid for the selected HTML tag
1198	 * @param $dom (array) array of HTML tags and properties
1199	 * @param $key (int) key of the current HTML tag
1200	 * @param $selector (string) CSS selector string
1201	 * @return true if the selector is valid, false otherwise
1202	 * @since 5.1.000 (2010-05-25)
1203	 * @public static
1204	 */
1205	public static function isValidCSSSelectorForTag($dom, $key, $selector) {
1206		$valid = false; // value to be returned
1207		$tag = $dom[$key]['value'];
1208		$class = array();
1209		if (isset($dom[$key]['attribute']['class']) AND !empty($dom[$key]['attribute']['class'])) {
1210			$class = explode(' ', strtolower($dom[$key]['attribute']['class']));
1211		}
1212		$id = '';
1213		if (isset($dom[$key]['attribute']['id']) AND !empty($dom[$key]['attribute']['id'])) {
1214			$id = strtolower($dom[$key]['attribute']['id']);
1215		}
1216		$selector = preg_replace('/([\>\+\~\s]{1})([\.]{1})([^\>\+\~\s]*)/si', '\\1*.\\3', $selector);
1217		$matches = array();
1218		if (preg_match_all('/([\>\+\~\s]{1})([a-zA-Z0-9\*]+)([^\>\+\~\s]*)/si', $selector, $matches, PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE) > 0) {
1219			$parentop = array_pop($matches[1]);
1220			$operator = $parentop[0];
1221			$offset = $parentop[1];
1222			$lasttag = array_pop($matches[2]);
1223			$lasttag = strtolower(trim($lasttag[0]));
1224			if (($lasttag == '*') OR ($lasttag == $tag)) {
1225				// the last element on selector is our tag or 'any tag'
1226				$attrib = array_pop($matches[3]);
1227				$attrib = strtolower(trim($attrib[0]));
1228				if (!empty($attrib)) {
1229					// check if matches class, id, attribute, pseudo-class or pseudo-element
1230					switch ($attrib[0]) {
1231						case '.': { // class
1232							if (in_array(substr($attrib, 1), $class)) {
1233								$valid = true;
1234							}
1235							break;
1236						}
1237						case '#': { // ID
1238							if (substr($attrib, 1) == $id) {
1239								$valid = true;
1240							}
1241							break;
1242						}
1243						case '[': { // attribute
1244							$attrmatch = array();
1245							if (preg_match('/\[([a-zA-Z0-9]*)[\s]*([\~\^\$\*\|\=]*)[\s]*["]?([^"\]]*)["]?\]/i', $attrib, $attrmatch) > 0) {
1246								$att = strtolower($attrmatch[1]);
1247								$val = $attrmatch[3];
1248								if (isset($dom[$key]['attribute'][$att])) {
1249									switch ($attrmatch[2]) {
1250										case '=': {
1251											if ($dom[$key]['attribute'][$att] == $val) {
1252												$valid = true;
1253											}
1254											break;
1255										}
1256										case '~=': {
1257											if (in_array($val, explode(' ', $dom[$key]['attribute'][$att]))) {
1258												$valid = true;
1259											}
1260											break;
1261										}
1262										case '^=': {
1263											if ($val == substr($dom[$key]['attribute'][$att], 0, strlen($val))) {
1264												$valid = true;
1265											}
1266											break;
1267										}
1268										case '$=': {
1269											if ($val == substr($dom[$key]['attribute'][$att], -strlen($val))) {
1270												$valid = true;
1271											}
1272											break;
1273										}
1274										case '*=': {
1275											if (strpos($dom[$key]['attribute'][$att], $val) !== false) {
1276												$valid = true;
1277											}
1278											break;
1279										}
1280										case '|=': {
1281											if ($dom[$key]['attribute'][$att] == $val) {
1282												$valid = true;
1283											} elseif (preg_match('/'.$val.'[\-]{1}/i', $dom[$key]['attribute'][$att]) > 0) {
1284												$valid = true;
1285											}
1286											break;
1287										}
1288										default: {
1289											$valid = true;
1290										}
1291									}
1292								}
1293							}
1294							break;
1295						}
1296						case ':': { // pseudo-class or pseudo-element
1297							if ($attrib[1] == ':') { // pseudo-element
1298								// pseudo-elements are not supported!
1299								// (::first-line, ::first-letter, ::before, ::after)
1300							} else { // pseudo-class
1301								// pseudo-classes are not supported!
1302								// (:root, :nth-child(n), :nth-last-child(n), :nth-of-type(n), :nth-last-of-type(n), :first-child, :last-child, :first-of-type, :last-of-type, :only-child, :only-of-type, :empty, :link, :visited, :active, :hover, :focus, :target, :lang(fr), :enabled, :disabled, :checked)
1303							}
1304							break;
1305						}
1306					} // end of switch
1307				} else {
1308					$valid = true;
1309				}
1310				if ($valid AND ($offset > 0)) {
1311					$valid = false;
1312					// check remaining selector part
1313					$selector = substr($selector, 0, $offset);
1314					switch ($operator) {
1315						case ' ': { // descendant of an element
1316							while ($dom[$key]['parent'] > 0) {
1317								if (self::isValidCSSSelectorForTag($dom, $dom[$key]['parent'], $selector)) {
1318									$valid = true;
1319									break;
1320								} else {
1321									$key = $dom[$key]['parent'];
1322								}
1323							}
1324							break;
1325						}
1326						case '>': { // child of an element
1327							$valid = self::isValidCSSSelectorForTag($dom, $dom[$key]['parent'], $selector);
1328							break;
1329						}
1330						case '+': { // immediately preceded by an element
1331							for ($i = ($key - 1); $i > $dom[$key]['parent']; --$i) {
1332								if ($dom[$i]['tag'] AND $dom[$i]['opening']) {
1333									$valid = self::isValidCSSSelectorForTag($dom, $i, $selector);
1334									break;
1335								}
1336							}
1337							break;
1338						}
1339						case '~': { // preceded by an element
1340							for ($i = ($key - 1); $i > $dom[$key]['parent']; --$i) {
1341								if ($dom[$i]['tag'] AND $dom[$i]['opening']) {
1342									if (self::isValidCSSSelectorForTag($dom, $i, $selector)) {
1343										break;
1344									}
1345								}
1346							}
1347							break;
1348						}
1349					}
1350				}
1351			}
1352		}
1353		return $valid;
1354	}
1355
1356	/**
1357	 * Returns the styles array that apply for the selected HTML tag.
1358	 * @param $dom (array) array of HTML tags and properties
1359	 * @param $key (int) key of the current HTML tag
1360	 * @param $css (array) array of CSS properties
1361	 * @return array containing CSS properties
1362	 * @since 5.1.000 (2010-05-25)
1363	 * @public static
1364	 */
1365	public static function getCSSdataArray($dom, $key, $css) {
1366		$cssarray = array(); // style to be returned
1367		// get parent CSS selectors
1368		$selectors = array();
1369		if (isset($dom[($dom[$key]['parent'])]['csssel'])) {
1370			$selectors = $dom[($dom[$key]['parent'])]['csssel'];
1371		}
1372		// get all styles that apply
1373		foreach($css as $selector => $style) {
1374			$pos = strpos($selector, ' ');
1375			// get specificity
1376			$specificity = substr($selector, 0, $pos);
1377			// remove specificity
1378			$selector = substr($selector, $pos);
1379			// check if this selector apply to current tag
1380			if (self::isValidCSSSelectorForTag($dom, $key, $selector)) {
1381				if (!in_array($selector, $selectors)) {
1382					// add style if not already added on parent selector
1383					$cssarray[] = array('k' => $selector, 's' => $specificity, 'c' => $style);
1384					$selectors[] = $selector;
1385				}
1386			}
1387		}
1388		if (isset($dom[$key]['attribute']['style'])) {
1389			// attach inline style (latest properties have high priority)
1390			$cssarray[] = array('k' => '', 's' => '1000', 'c' => $dom[$key]['attribute']['style']);
1391		}
1392		// order the css array to account for specificity
1393		$cssordered = array();
1394		foreach ($cssarray as $key => $val) {
1395			$skey = sprintf('%04d', $key);
1396			$cssordered[$val['s'].'_'.$skey] = $val;
1397		}
1398		// sort selectors alphabetically to account for specificity
1399		ksort($cssordered, SORT_STRING);
1400		return array($selectors, $cssordered);
1401	}
1402
1403	/**
1404	 * Compact CSS data array into single string.
1405	 * @param $css (array) array of CSS properties
1406	 * @return string containing merged CSS properties
1407	 * @since 5.9.070 (2011-04-19)
1408	 * @public static
1409	 */
1410	public static function getTagStyleFromCSSarray($css) {
1411		$tagstyle = ''; // value to be returned
1412		foreach ($css as $style) {
1413			// split single css commands
1414			$csscmds = explode(';', $style['c']);
1415			foreach ($csscmds as $cmd) {
1416				if (!empty($cmd)) {
1417					$pos = strpos($cmd, ':');
1418					if ($pos !== false) {
1419						$cmd = substr($cmd, 0, ($pos + 1));
1420						if (strpos($tagstyle, $cmd) !== false) {
1421							// remove duplicate commands (last commands have high priority)
1422							$tagstyle = preg_replace('/'.$cmd.'[^;]+/i', '', $tagstyle);
1423						}
1424					}
1425				}
1426			}
1427			$tagstyle .= ';'.$style['c'];
1428		}
1429		// remove multiple semicolons
1430		$tagstyle = preg_replace('/[;]+/', ';', $tagstyle);
1431		return $tagstyle;
1432	}
1433
1434	/**
1435	 * Returns the Roman representation of an integer number
1436	 * @param $number (int) number to convert
1437	 * @return string roman representation of the specified number
1438	 * @since 4.4.004 (2008-12-10)
1439	 * @public static
1440	 */
1441	public static function intToRoman($number) {
1442		$roman = '';
1443		while ($number >= 1000) {
1444			$roman .= 'M';
1445			$number -= 1000;
1446		}
1447		while ($number >= 900) {
1448			$roman .= 'CM';
1449			$number -= 900;
1450		}
1451		while ($number >= 500) {
1452			$roman .= 'D';
1453			$number -= 500;
1454		}
1455		while ($number >= 400) {
1456			$roman .= 'CD';
1457			$number -= 400;
1458		}
1459		while ($number >= 100) {
1460			$roman .= 'C';
1461			$number -= 100;
1462		}
1463		while ($number >= 90) {
1464			$roman .= 'XC';
1465			$number -= 90;
1466		}
1467		while ($number >= 50) {
1468			$roman .= 'L';
1469			$number -= 50;
1470		}
1471		while ($number >= 40) {
1472			$roman .= 'XL';
1473			$number -= 40;
1474		}
1475		while ($number >= 10) {
1476			$roman .= 'X';
1477			$number -= 10;
1478		}
1479		while ($number >= 9) {
1480			$roman .= 'IX';
1481			$number -= 9;
1482		}
1483		while ($number >= 5) {
1484			$roman .= 'V';
1485			$number -= 5;
1486		}
1487		while ($number >= 4) {
1488			$roman .= 'IV';
1489			$number -= 4;
1490		}
1491		while ($number >= 1) {
1492			$roman .= 'I';
1493			--$number;
1494		}
1495		return $roman;
1496	}
1497
1498	/**
1499	 * Find position of last occurrence of a substring in a string
1500	 * @param $haystack (string) The string to search in.
1501	 * @param $needle (string) substring to search.
1502	 * @param $offset (int) May be specified to begin searching an arbitrary number of characters into the string.
1503	 * @return Returns the position where the needle exists. Returns FALSE if the needle was not found.
1504	 * @since 4.8.038 (2010-03-13)
1505	 * @public static
1506	 */
1507	public static function revstrpos($haystack, $needle, $offset = 0) {
1508		$length = strlen($haystack);
1509		$offset = ($offset > 0)?($length - $offset):abs($offset);
1510		$pos = strpos(strrev($haystack), strrev($needle), $offset);
1511		return ($pos === false)?false:($length - $pos - strlen($needle));
1512	}
1513
1514	/**
1515	 * Returns an array of hyphenation patterns.
1516	 * @param $file (string) TEX file containing hypenation patterns. TEX pattrns can be downloaded from http://www.ctan.org/tex-archive/language/hyph-utf8/tex/generic/hyph-utf8/patterns/
1517	 * @return array of hyphenation patterns
1518	 * @author Nicola Asuni
1519	 * @since 4.9.012 (2010-04-12)
1520	 * @public static
1521	 */
1522	public static function getHyphenPatternsFromTEX($file) {
1523		// TEX patterns are available at:
1524		// http://www.ctan.org/tex-archive/language/hyph-utf8/tex/generic/hyph-utf8/patterns/
1525		$data = file_get_contents($file);
1526		$patterns = array();
1527		// remove comments
1528		$data = preg_replace('/\%[^\n]*/', '', $data);
1529		// extract the patterns part
1530		preg_match('/\\\\patterns\{([^\}]*)\}/i', $data, $matches);
1531		$data = trim(substr($matches[0], 10, -1));
1532		// extract each pattern
1533		$patterns_array = preg_split('/[\s]+/', $data);
1534		// create new language array of patterns
1535		$patterns = array();
1536		foreach($patterns_array as $val) {
1537			if (!TCPDF_STATIC::empty_string($val)) {
1538				$val = trim($val);
1539				$val = str_replace('\'', '\\\'', $val);
1540				$key = preg_replace('/[0-9]+/', '', $val);
1541				$patterns[$key] = $val;
1542			}
1543		}
1544		return $patterns;
1545	}
1546
1547	/**
1548	 * Get the Path-Painting Operators.
1549	 * @param $style (string) Style of rendering. Possible values are:
1550	 * <ul>
1551	 *   <li>S or D: Stroke the path.</li>
1552	 *   <li>s or d: Close and stroke the path.</li>
1553	 *   <li>f or F: Fill the path, using the nonzero winding number rule to determine the region to fill.</li>
1554	 *   <li>f* or F*: Fill the path, using the even-odd rule to determine the region to fill.</li>
1555	 *   <li>B or FD or DF: Fill and then stroke the path, using the nonzero winding number rule to determine the region to fill.</li>
1556	 *   <li>B* or F*D or DF*: Fill and then stroke the path, using the even-odd rule to determine the region to fill.</li>
1557	 *   <li>b or fd or df: Close, fill, and then stroke the path, using the nonzero winding number rule to determine the region to fill.</li>
1558	 *   <li>b or f*d or df*: Close, fill, and then stroke the path, using the even-odd rule to determine the region to fill.</li>
1559	 *   <li>CNZ: Clipping mode using the even-odd rule to determine which regions lie inside the clipping path.</li>
1560	 *   <li>CEO: Clipping mode using the nonzero winding number rule to determine which regions lie inside the clipping path</li>
1561	 *   <li>n: End the path object without filling or stroking it.</li>
1562	 * </ul>
1563	 * @param $default (string) default style
1564	 * @author Nicola Asuni
1565	 * @since 5.0.000 (2010-04-30)
1566	 * @public static
1567	 */
1568	public static function getPathPaintOperator($style, $default='S') {
1569		$op = '';
1570		switch($style) {
1571			case 'S':
1572			case 'D': {
1573				$op = 'S';
1574				break;
1575			}
1576			case 's':
1577			case 'd': {
1578				$op = 's';
1579				break;
1580			}
1581			case 'f':
1582			case 'F': {
1583				$op = 'f';
1584				break;
1585			}
1586			case 'f*':
1587			case 'F*': {
1588				$op = 'f*';
1589				break;
1590			}
1591			case 'B':
1592			case 'FD':
1593			case 'DF': {
1594				$op = 'B';
1595				break;
1596			}
1597			case 'B*':
1598			case 'F*D':
1599			case 'DF*': {
1600				$op = 'B*';
1601				break;
1602			}
1603			case 'b':
1604			case 'fd':
1605			case 'df': {
1606				$op = 'b';
1607				break;
1608			}
1609			case 'b*':
1610			case 'f*d':
1611			case 'df*': {
1612				$op = 'b*';
1613				break;
1614			}
1615			case 'CNZ': {
1616				$op = 'W n';
1617				break;
1618			}
1619			case 'CEO': {
1620				$op = 'W* n';
1621				break;
1622			}
1623			case 'n': {
1624				$op = 'n';
1625				break;
1626			}
1627			default: {
1628				if (!empty($default)) {
1629					$op = self::getPathPaintOperator($default, '');
1630				} else {
1631					$op = '';
1632				}
1633			}
1634		}
1635		return $op;
1636	}
1637
1638	/**
1639	 * Get the product of two SVG tranformation matrices
1640	 * @param $ta (array) first SVG tranformation matrix
1641	 * @param $tb (array) second SVG tranformation matrix
1642	 * @return transformation array
1643	 * @author Nicola Asuni
1644	 * @since 5.0.000 (2010-05-02)
1645	 * @public static
1646	 */
1647	public static function getTransformationMatrixProduct($ta, $tb) {
1648		$tm = array();
1649		$tm[0] = ($ta[0] * $tb[0]) + ($ta[2] * $tb[1]);
1650		$tm[1] = ($ta[1] * $tb[0]) + ($ta[3] * $tb[1]);
1651		$tm[2] = ($ta[0] * $tb[2]) + ($ta[2] * $tb[3]);
1652		$tm[3] = ($ta[1] * $tb[2]) + ($ta[3] * $tb[3]);
1653		$tm[4] = ($ta[0] * $tb[4]) + ($ta[2] * $tb[5]) + $ta[4];
1654		$tm[5] = ($ta[1] * $tb[4]) + ($ta[3] * $tb[5]) + $ta[5];
1655		return $tm;
1656	}
1657
1658	/**
1659	 * Get the tranformation matrix from SVG transform attribute
1660	 * @param $attribute (string) transformation
1661	 * @return array of transformations
1662	 * @author Nicola Asuni
1663	 * @since 5.0.000 (2010-05-02)
1664	 * @public static
1665	 */
1666	public static function getSVGTransformMatrix($attribute) {
1667		// identity matrix
1668		$tm = array(1, 0, 0, 1, 0, 0);
1669		$transform = array();
1670		if (preg_match_all('/(matrix|translate|scale|rotate|skewX|skewY)[\s]*\(([^\)]+)\)/si', $attribute, $transform, PREG_SET_ORDER) > 0) {
1671			foreach ($transform as $key => $data) {
1672				if (!empty($data[2])) {
1673					$a = 1;
1674					$b = 0;
1675					$c = 0;
1676					$d = 1;
1677					$e = 0;
1678					$f = 0;
1679					$regs = array();
1680					switch ($data[1]) {
1681						case 'matrix': {
1682							if (preg_match('/([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)/si', $data[2], $regs)) {
1683								$a = $regs[1];
1684								$b = $regs[2];
1685								$c = $regs[3];
1686								$d = $regs[4];
1687								$e = $regs[5];
1688								$f = $regs[6];
1689							}
1690							break;
1691						}
1692						case 'translate': {
1693							if (preg_match('/([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)/si', $data[2], $regs)) {
1694								$e = $regs[1];
1695								$f = $regs[2];
1696							} elseif (preg_match('/([a-z0-9\-\.]+)/si', $data[2], $regs)) {
1697								$e = $regs[1];
1698							}
1699							break;
1700						}
1701						case 'scale': {
1702							if (preg_match('/([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)/si', $data[2], $regs)) {
1703								$a = $regs[1];
1704								$d = $regs[2];
1705							} elseif (preg_match('/([a-z0-9\-\.]+)/si', $data[2], $regs)) {
1706								$a = $regs[1];
1707								$d = $a;
1708							}
1709							break;
1710						}
1711						case 'rotate': {
1712							if (preg_match('/([0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)[\,\s]+([a-z0-9\-\.]+)/si', $data[2], $regs)) {
1713								$ang = deg2rad($regs[1]);
1714								$x = $regs[2];
1715								$y = $regs[3];
1716								$a = cos($ang);
1717								$b = sin($ang);
1718								$c = -$b;
1719								$d = $a;
1720								$e = ($x * (1 - $a)) - ($y * $c);
1721								$f = ($y * (1 - $d)) - ($x * $b);
1722							} elseif (preg_match('/([0-9\-\.]+)/si', $data[2], $regs)) {
1723								$ang = deg2rad($regs[1]);
1724								$a = cos($ang);
1725								$b = sin($ang);
1726								$c = -$b;
1727								$d = $a;
1728								$e = 0;
1729								$f = 0;
1730							}
1731							break;
1732						}
1733						case 'skewX': {
1734							if (preg_match('/([0-9\-\.]+)/si', $data[2], $regs)) {
1735								$c = tan(deg2rad($regs[1]));
1736							}
1737							break;
1738						}
1739						case 'skewY': {
1740							if (preg_match('/([0-9\-\.]+)/si', $data[2], $regs)) {
1741								$b = tan(deg2rad($regs[1]));
1742							}
1743							break;
1744						}
1745					}
1746					$tm = self::getTransformationMatrixProduct($tm, array($a, $b, $c, $d, $e, $f));
1747				}
1748			}
1749		}
1750		return $tm;
1751	}
1752
1753	/**
1754	 * Returns the angle in radiants between two vectors
1755	 * @param $x1 (int) X coordinate of first vector point
1756	 * @param $y1 (int) Y coordinate of first vector point
1757	 * @param $x2 (int) X coordinate of second vector point
1758	 * @param $y2 (int) Y coordinate of second vector point
1759	 * @author Nicola Asuni
1760	 * @since 5.0.000 (2010-05-04)
1761	 * @public static
1762	 */
1763	public static function getVectorsAngle($x1, $y1, $x2, $y2) {
1764		$dprod = ($x1 * $x2) + ($y1 * $y2);
1765		$dist1 = sqrt(($x1 * $x1) + ($y1 * $y1));
1766		$dist2 = sqrt(($x2 * $x2) + ($y2 * $y2));
1767		$angle = acos($dprod / ($dist1 * $dist2));
1768		if (is_nan($angle)) {
1769			$angle = M_PI;
1770		}
1771		if ((($x1 * $y2) - ($x2 * $y1)) < 0) {
1772			$angle *= -1;
1773		}
1774		return $angle;
1775	}
1776
1777	/**
1778	 * Split string by a regular expression.
1779	 * This is a wrapper for the preg_split function to avoid the bug: https://bugs.php.net/bug.php?id=45850
1780	 * @param $pattern (string) The regular expression pattern to search for without the modifiers, as a string.
1781	 * @param $modifiers (string) The modifiers part of the pattern,
1782	 * @param $subject (string) The input string.
1783	 * @param $limit (int) If specified, then only substrings up to limit are returned with the rest of the string being placed in the last substring. A limit of -1, 0 or NULL means "no limit" and, as is standard across PHP, you can use NULL to skip to the flags parameter.
1784	 * @param $flags (int) The flags as specified on the preg_split PHP function.
1785	 * @return Returns an array containing substrings of subject split along boundaries matched by pattern.modifier
1786	 * @author Nicola Asuni
1787	 * @since 6.0.023
1788	 * @public static
1789	 */
1790	public static function pregSplit($pattern, $modifiers, $subject, $limit=NULL, $flags=NULL) {
1791		// the bug only happens on PHP 5.2 when using the u modifier
1792		if ((strpos($modifiers, 'u') === FALSE) OR (count(preg_split('//u', "\n\t", -1, PREG_SPLIT_NO_EMPTY)) == 2)) {
1793			return preg_split($pattern.$modifiers, $subject, $limit, $flags);
1794		}
1795		// preg_split is bugged - try alternative solution
1796		$ret = array();
1797		while (($nl = strpos($subject, "\n")) !== FALSE) {
1798			$ret = array_merge($ret, preg_split($pattern.$modifiers, substr($subject, 0, $nl), $limit, $flags));
1799			$ret[] = "\n";
1800			$subject = substr($subject, ($nl + 1));
1801		}
1802		if (strlen($subject) > 0) {
1803			$ret = array_merge($ret, preg_split($pattern.$modifiers, $subject, $limit, $flags));
1804		}
1805		return $ret;
1806	}
1807
1808	/**
1809	 * Wrapper to use fopen only with local files
1810	 * @param filename (string) Name of the file to open
1811	 * @param $mode (string)
1812	 * @return Returns a file pointer resource on success, or FALSE on error.
1813	 * @public static
1814	 */
1815	public static function fopenLocal($filename, $mode) {
1816		if (strpos($filename, '://') === false) {
1817			$filename = 'file://'.$filename;
1818		} elseif (stream_is_local($filename) !== true) {
1819			return false;
1820		}
1821		return fopen($filename, $mode);
1822	}
1823
1824	/**
1825	 * Check if the URL exist.
1826	 * @param url (string) URL to check.
1827	 * @return Returns TRUE if the URL exists; FALSE otherwise.
1828	 * @public static
1829	 */
1830	public static function url_exists($url) {
1831		$crs = curl_init();
1832		curl_setopt($crs, CURLOPT_URL, $url);
1833		curl_setopt($crs, CURLOPT_NOBODY, true);
1834		curl_setopt($crs, CURLOPT_FAILONERROR, true);
1835		if ((ini_get('open_basedir') == '') && (!ini_get('safe_mode'))) {
1836			curl_setopt($crs, CURLOPT_FOLLOWLOCATION, true);
1837		}
1838		curl_setopt($crs, CURLOPT_CONNECTTIMEOUT, 5);
1839		curl_setopt($crs, CURLOPT_TIMEOUT, 30);
1840		curl_setopt($crs, CURLOPT_SSL_VERIFYPEER, false);
1841		curl_setopt($crs, CURLOPT_SSL_VERIFYHOST, false);
1842		curl_setopt($crs, CURLOPT_USERAGENT, 'tc-lib-file');
1843		curl_exec($crs);
1844		$code = curl_getinfo($crs, CURLINFO_HTTP_CODE);
1845		curl_close($crs);
1846		return ($code == 200);
1847	}
1848
1849	/**
1850	 * Wrapper for file_exists.
1851	 * Checks whether a file or directory exists.
1852	 * Only allows some protocols and local files.
1853	 * @param filename (string) Path to the file or directory.
1854	 * @return Returns TRUE if the file or directory specified by filename exists; FALSE otherwise.
1855	 * @public static
1856	 */
1857	public static function file_exists($filename) {
1858		if (preg_match('|^https?://|', $filename) == 1) {
1859			return self::url_exists($filename);
1860		}
1861		if (strpos($filename, '://')) {
1862			return false; // only support http and https wrappers for security reasons
1863		}
1864		return @file_exists($filename);
1865	}
1866
1867	/**
1868	 * Reads entire file into a string.
1869	 * The file can be also an URL.
1870	 * @param $file (string) Name of the file or URL to read.
1871	 * @return The function returns the read data or FALSE on failure.
1872	 * @author Nicola Asuni
1873	 * @since 6.0.025
1874	 * @public static
1875	 */
1876	public static function fileGetContents($file) {
1877		$alt = array($file);
1878		//
1879		if ((strlen($file) > 1)
1880		    && ($file[0] === '/')
1881		    && ($file[1] !== '/')
1882		    && !empty($_SERVER['DOCUMENT_ROOT'])
1883		    && ($_SERVER['DOCUMENT_ROOT'] !== '/')
1884		) {
1885		    $findroot = strpos($file, $_SERVER['DOCUMENT_ROOT']);
1886		    if (($findroot === false) || ($findroot > 1)) {
1887			$alt[] = htmlspecialchars_decode(urldecode($_SERVER['DOCUMENT_ROOT'].$file));
1888		    }
1889		}
1890		//
1891		$protocol = 'http';
1892		if (!empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS']) != 'off')) {
1893		    $protocol .= 's';
1894		}
1895		//
1896		$url = $file;
1897		if (preg_match('%^//%', $url) && !empty($_SERVER['HTTP_HOST'])) {
1898			$url = $protocol.':'.str_replace(' ', '%20', $url);
1899		}
1900		$url = htmlspecialchars_decode($url);
1901		$alt[] = $url;
1902		//
1903		if (preg_match('%^(https?)://%', $url)
1904		    && empty($_SERVER['HTTP_HOST'])
1905		    && empty($_SERVER['DOCUMENT_ROOT'])
1906		) {
1907			$urldata = parse_url($url);
1908			if (empty($urldata['query'])) {
1909				$host = $protocol.'://'.$_SERVER['HTTP_HOST'];
1910				if (strpos($url, $host) === 0) {
1911				    // convert URL to full server path
1912				    $tmp = str_replace($host, $_SERVER['DOCUMENT_ROOT'], $url);
1913				    $alt[] = htmlspecialchars_decode(urldecode($tmp));
1914				}
1915			}
1916		}
1917		//
1918		if (isset($_SERVER['SCRIPT_URI'])
1919		    && !preg_match('%^(https?|ftp)://%', $file)
1920		    && !preg_match('%^//%', $file)
1921		) {
1922		    $urldata = @parse_url($_SERVER['SCRIPT_URI']);
1923		    $alt[] = $urldata['scheme'].'://'.$urldata['host'].(($file[0] == '/') ? '' : '/').$file;
1924		}
1925		//
1926		$alt = array_unique($alt);
1927		foreach ($alt as $path) {
1928			if (!self::file_exists($path)) {
1929				return false;
1930			}
1931			$ret = @file_get_contents($path);
1932			if ($ret !== false) {
1933			    return $ret;
1934			}
1935			// try to use CURL for URLs
1936			if (!ini_get('allow_url_fopen')
1937				&& function_exists('curl_init')
1938				&& preg_match('%^(https?|ftp)://%', $path)
1939			) {
1940				// try to get remote file data using cURL
1941				$crs = curl_init();
1942				curl_setopt($crs, CURLOPT_URL, $path);
1943				curl_setopt($crs, CURLOPT_BINARYTRANSFER, true);
1944				curl_setopt($crs, CURLOPT_FAILONERROR, true);
1945				curl_setopt($crs, CURLOPT_RETURNTRANSFER, true);
1946				if ((ini_get('open_basedir') == '') && (!ini_get('safe_mode'))) {
1947				    curl_setopt($crs, CURLOPT_FOLLOWLOCATION, true);
1948				}
1949				curl_setopt($crs, CURLOPT_CONNECTTIMEOUT, 5);
1950				curl_setopt($crs, CURLOPT_TIMEOUT, 30);
1951				curl_setopt($crs, CURLOPT_SSL_VERIFYPEER, false);
1952				curl_setopt($crs, CURLOPT_SSL_VERIFYHOST, false);
1953				curl_setopt($crs, CURLOPT_USERAGENT, 'tc-lib-file');
1954				$ret = curl_exec($crs);
1955				curl_close($crs);
1956				if ($ret !== false) {
1957					return $ret;
1958				}
1959			}
1960		}
1961		return false;
1962	}
1963
1964	/**
1965	 * Get ULONG from string (Big Endian 32-bit unsigned integer).
1966	 * @param $str (string) string from where to extract value
1967	 * @param $offset (int) point from where to read the data
1968	 * @return int 32 bit value
1969	 * @author Nicola Asuni
1970	 * @since 5.2.000 (2010-06-02)
1971	 * @public static
1972	 */
1973	public static function _getULONG($str, $offset) {
1974		$v = unpack('Ni', substr($str, $offset, 4));
1975		return $v['i'];
1976	}
1977
1978	/**
1979	 * Get USHORT from string (Big Endian 16-bit unsigned integer).
1980	 * @param $str (string) string from where to extract value
1981	 * @param $offset (int) point from where to read the data
1982	 * @return int 16 bit value
1983	 * @author Nicola Asuni
1984	 * @since 5.2.000 (2010-06-02)
1985	 * @public static
1986	 */
1987	public static function _getUSHORT($str, $offset) {
1988		$v = unpack('ni', substr($str, $offset, 2));
1989		return $v['i'];
1990	}
1991
1992	/**
1993	 * Get SHORT from string (Big Endian 16-bit signed integer).
1994	 * @param $str (string) String from where to extract value.
1995	 * @param $offset (int) Point from where to read the data.
1996	 * @return int 16 bit value
1997	 * @author Nicola Asuni
1998	 * @since 5.2.000 (2010-06-02)
1999	 * @public static
2000	 */
2001	public static function _getSHORT($str, $offset) {
2002		$v = unpack('si', substr($str, $offset, 2));
2003		return $v['i'];
2004	}
2005
2006	/**
2007	 * Get FWORD from string (Big Endian 16-bit signed integer).
2008	 * @param $str (string) String from where to extract value.
2009	 * @param $offset (int) Point from where to read the data.
2010	 * @return int 16 bit value
2011	 * @author Nicola Asuni
2012	 * @since 5.9.123 (2011-09-30)
2013	 * @public static
2014	 */
2015	public static function _getFWORD($str, $offset) {
2016		$v = self::_getUSHORT($str, $offset);
2017		if ($v > 0x7fff) {
2018			$v -= 0x10000;
2019		}
2020		return $v;
2021	}
2022
2023	/**
2024	 * Get UFWORD from string (Big Endian 16-bit unsigned integer).
2025	 * @param $str (string) string from where to extract value
2026	 * @param $offset (int) point from where to read the data
2027	 * @return int 16 bit value
2028	 * @author Nicola Asuni
2029	 * @since 5.9.123 (2011-09-30)
2030	 * @public static
2031	 */
2032	public static function _getUFWORD($str, $offset) {
2033		$v = self::_getUSHORT($str, $offset);
2034		return $v;
2035	}
2036
2037	/**
2038	 * Get FIXED from string (32-bit signed fixed-point number (16.16).
2039	 * @param $str (string) string from where to extract value
2040	 * @param $offset (int) point from where to read the data
2041	 * @return int 16 bit value
2042	 * @author Nicola Asuni
2043	 * @since 5.9.123 (2011-09-30)
2044	 * @public static
2045	 */
2046	public static function _getFIXED($str, $offset) {
2047		// mantissa
2048		$m = self::_getFWORD($str, $offset);
2049		// fraction
2050		$f = self::_getUSHORT($str, ($offset + 2));
2051		$v = floatval(''.$m.'.'.$f.'');
2052		return $v;
2053	}
2054
2055	/**
2056	 * Get BYTE from string (8-bit unsigned integer).
2057	 * @param $str (string) String from where to extract value.
2058	 * @param $offset (int) Point from where to read the data.
2059	 * @return int 8 bit value
2060	 * @author Nicola Asuni
2061	 * @since 5.2.000 (2010-06-02)
2062	 * @public static
2063	 */
2064	public static function _getBYTE($str, $offset) {
2065		$v = unpack('Ci', substr($str, $offset, 1));
2066		return $v['i'];
2067	}
2068	/**
2069	 * Binary-safe and URL-safe file read.
2070	 * Reads up to length bytes from the file pointer referenced by handle. Reading stops as soon as one of the following conditions is met: length bytes have been read; EOF (end of file) is reached.
2071	 * @param $handle (resource)
2072	 * @param $length (int)
2073	 * @return Returns the read string or FALSE in case of error.
2074	 * @author Nicola Asuni
2075	 * @since 4.5.027 (2009-03-16)
2076	 * @public static
2077	 */
2078	public static function rfread($handle, $length) {
2079		$data = fread($handle, $length);
2080		if ($data === false) {
2081			return false;
2082		}
2083		$rest = ($length - strlen($data));
2084		if (($rest > 0) && !feof($handle)) {
2085			$data .= self::rfread($handle, $rest);
2086		}
2087		return $data;
2088	}
2089
2090	/**
2091	 * Read a 4-byte (32 bit) integer from file.
2092	 * @param $f (string) file name.
2093	 * @return 4-byte integer
2094	 * @public static
2095	 */
2096	public static function _freadint($f) {
2097		$a = unpack('Ni', fread($f, 4));
2098		return $a['i'];
2099	}
2100
2101
2102	/**
2103	 * Array of page formats
2104	 * measures are calculated in this way: (inches * 72) or (millimeters * 72 / 25.4)
2105	 * @public static
2106	 */
2107	public static $page_formats = array(
2108		// ISO 216 A Series + 2 SIS 014711 extensions
2109		'A0'                     => array( 2383.937,  3370.394), // = (  841 x 1189 ) mm  = ( 33.11 x 46.81 ) in
2110		'A1'                     => array( 1683.780,  2383.937), // = (  594 x 841  ) mm  = ( 23.39 x 33.11 ) in
2111		'A2'                     => array( 1190.551,  1683.780), // = (  420 x 594  ) mm  = ( 16.54 x 23.39 ) in
2112		'A3'                     => array(  841.890,  1190.551), // = (  297 x 420  ) mm  = ( 11.69 x 16.54 ) in
2113		'A4'                     => array(  595.276,   841.890), // = (  210 x 297  ) mm  = (  8.27 x 11.69 ) in
2114		'A5'                     => array(  419.528,   595.276), // = (  148 x 210  ) mm  = (  5.83 x 8.27  ) in
2115		'A6'                     => array(  297.638,   419.528), // = (  105 x 148  ) mm  = (  4.13 x 5.83  ) in
2116		'A7'                     => array(  209.764,   297.638), // = (   74 x 105  ) mm  = (  2.91 x 4.13  ) in
2117		'A8'                     => array(  147.402,   209.764), // = (   52 x 74   ) mm  = (  2.05 x 2.91  ) in
2118		'A9'                     => array(  104.882,   147.402), // = (   37 x 52   ) mm  = (  1.46 x 2.05  ) in
2119		'A10'                    => array(   73.701,   104.882), // = (   26 x 37   ) mm  = (  1.02 x 1.46  ) in
2120		'A11'                    => array(   51.024,    73.701), // = (   18 x 26   ) mm  = (  0.71 x 1.02  ) in
2121		'A12'                    => array(   36.850,    51.024), // = (   13 x 18   ) mm  = (  0.51 x 0.71  ) in
2122		// ISO 216 B Series + 2 SIS 014711 extensions
2123		'B0'                     => array( 2834.646,  4008.189), // = ( 1000 x 1414 ) mm  = ( 39.37 x 55.67 ) in
2124		'B1'                     => array( 2004.094,  2834.646), // = (  707 x 1000 ) mm  = ( 27.83 x 39.37 ) in
2125		'B2'                     => array( 1417.323,  2004.094), // = (  500 x 707  ) mm  = ( 19.69 x 27.83 ) in
2126		'B3'                     => array( 1000.630,  1417.323), // = (  353 x 500  ) mm  = ( 13.90 x 19.69 ) in
2127		'B4'                     => array(  708.661,  1000.630), // = (  250 x 353  ) mm  = (  9.84 x 13.90 ) in
2128		'B5'                     => array(  498.898,   708.661), // = (  176 x 250  ) mm  = (  6.93 x 9.84  ) in
2129		'B6'                     => array(  354.331,   498.898), // = (  125 x 176  ) mm  = (  4.92 x 6.93  ) in
2130		'B7'                     => array(  249.449,   354.331), // = (   88 x 125  ) mm  = (  3.46 x 4.92  ) in
2131		'B8'                     => array(  175.748,   249.449), // = (   62 x 88   ) mm  = (  2.44 x 3.46  ) in
2132		'B9'                     => array(  124.724,   175.748), // = (   44 x 62   ) mm  = (  1.73 x 2.44  ) in
2133		'B10'                    => array(   87.874,   124.724), // = (   31 x 44   ) mm  = (  1.22 x 1.73  ) in
2134		'B11'                    => array(   62.362,    87.874), // = (   22 x 31   ) mm  = (  0.87 x 1.22  ) in
2135		'B12'                    => array(   42.520,    62.362), // = (   15 x 22   ) mm  = (  0.59 x 0.87  ) in
2136		// ISO 216 C Series + 2 SIS 014711 extensions + 5 EXTENSION
2137		'C0'                     => array( 2599.370,  3676.535), // = (  917 x 1297 ) mm  = ( 36.10 x 51.06 ) in
2138		'C1'                     => array( 1836.850,  2599.370), // = (  648 x 917  ) mm  = ( 25.51 x 36.10 ) in
2139		'C2'                     => array( 1298.268,  1836.850), // = (  458 x 648  ) mm  = ( 18.03 x 25.51 ) in
2140		'C3'                     => array(  918.425,  1298.268), // = (  324 x 458  ) mm  = ( 12.76 x 18.03 ) in
2141		'C4'                     => array(  649.134,   918.425), // = (  229 x 324  ) mm  = (  9.02 x 12.76 ) in
2142		'C5'                     => array(  459.213,   649.134), // = (  162 x 229  ) mm  = (  6.38 x 9.02  ) in
2143		'C6'                     => array(  323.150,   459.213), // = (  114 x 162  ) mm  = (  4.49 x 6.38  ) in
2144		'C7'                     => array(  229.606,   323.150), // = (   81 x 114  ) mm  = (  3.19 x 4.49  ) in
2145		'C8'                     => array(  161.575,   229.606), // = (   57 x 81   ) mm  = (  2.24 x 3.19  ) in
2146		'C9'                     => array(  113.386,   161.575), // = (   40 x 57   ) mm  = (  1.57 x 2.24  ) in
2147		'C10'                    => array(   79.370,   113.386), // = (   28 x 40   ) mm  = (  1.10 x 1.57  ) in
2148		'C11'                    => array(   56.693,    79.370), // = (   20 x 28   ) mm  = (  0.79 x 1.10  ) in
2149		'C12'                    => array(   39.685,    56.693), // = (   14 x 20   ) mm  = (  0.55 x 0.79  ) in
2150		'C76'                    => array(  229.606,   459.213), // = (   81 x 162  ) mm  = (  3.19 x 6.38  ) in
2151		'DL'                     => array(  311.811,   623.622), // = (  110 x 220  ) mm  = (  4.33 x 8.66  ) in
2152		'DLE'                    => array(  323.150,   637.795), // = (  114 x 225  ) mm  = (  4.49 x 8.86  ) in
2153		'DLX'                    => array(  340.158,   666.142), // = (  120 x 235  ) mm  = (  4.72 x 9.25  ) in
2154		'DLP'                    => array(  280.630,   595.276), // = (   99 x 210  ) mm  = (  3.90 x 8.27  ) in (1/3 A4)
2155		// SIS 014711 E Series
2156		'E0'                     => array( 2491.654,  3517.795), // = (  879 x 1241 ) mm  = ( 34.61 x 48.86 ) in
2157		'E1'                     => array( 1757.480,  2491.654), // = (  620 x 879  ) mm  = ( 24.41 x 34.61 ) in
2158		'E2'                     => array( 1247.244,  1757.480), // = (  440 x 620  ) mm  = ( 17.32 x 24.41 ) in
2159		'E3'                     => array(  878.740,  1247.244), // = (  310 x 440  ) mm  = ( 12.20 x 17.32 ) in
2160		'E4'                     => array(  623.622,   878.740), // = (  220 x 310  ) mm  = (  8.66 x 12.20 ) in
2161		'E5'                     => array(  439.370,   623.622), // = (  155 x 220  ) mm  = (  6.10 x 8.66  ) in
2162		'E6'                     => array(  311.811,   439.370), // = (  110 x 155  ) mm  = (  4.33 x 6.10  ) in
2163		'E7'                     => array(  221.102,   311.811), // = (   78 x 110  ) mm  = (  3.07 x 4.33  ) in
2164		'E8'                     => array(  155.906,   221.102), // = (   55 x 78   ) mm  = (  2.17 x 3.07  ) in
2165		'E9'                     => array(  110.551,   155.906), // = (   39 x 55   ) mm  = (  1.54 x 2.17  ) in
2166		'E10'                    => array(   76.535,   110.551), // = (   27 x 39   ) mm  = (  1.06 x 1.54  ) in
2167		'E11'                    => array(   53.858,    76.535), // = (   19 x 27   ) mm  = (  0.75 x 1.06  ) in
2168		'E12'                    => array(   36.850,    53.858), // = (   13 x 19   ) mm  = (  0.51 x 0.75  ) in
2169		// SIS 014711 G Series
2170		'G0'                     => array( 2715.591,  3838.110), // = (  958 x 1354 ) mm  = ( 37.72 x 53.31 ) in
2171		'G1'                     => array( 1919.055,  2715.591), // = (  677 x 958  ) mm  = ( 26.65 x 37.72 ) in
2172		'G2'                     => array( 1357.795,  1919.055), // = (  479 x 677  ) mm  = ( 18.86 x 26.65 ) in
2173		'G3'                     => array(  958.110,  1357.795), // = (  338 x 479  ) mm  = ( 13.31 x 18.86 ) in
2174		'G4'                     => array(  677.480,   958.110), // = (  239 x 338  ) mm  = (  9.41 x 13.31 ) in
2175		'G5'                     => array(  479.055,   677.480), // = (  169 x 239  ) mm  = (  6.65 x 9.41  ) in
2176		'G6'                     => array(  337.323,   479.055), // = (  119 x 169  ) mm  = (  4.69 x 6.65  ) in
2177		'G7'                     => array(  238.110,   337.323), // = (   84 x 119  ) mm  = (  3.31 x 4.69  ) in
2178		'G8'                     => array(  167.244,   238.110), // = (   59 x 84   ) mm  = (  2.32 x 3.31  ) in
2179		'G9'                     => array(  119.055,   167.244), // = (   42 x 59   ) mm  = (  1.65 x 2.32  ) in
2180		'G10'                    => array(   82.205,   119.055), // = (   29 x 42   ) mm  = (  1.14 x 1.65  ) in
2181		'G11'                    => array(   59.528,    82.205), // = (   21 x 29   ) mm  = (  0.83 x 1.14  ) in
2182		'G12'                    => array(   39.685,    59.528), // = (   14 x 21   ) mm  = (  0.55 x 0.83  ) in
2183		// ISO Press
2184		'RA0'                    => array( 2437.795,  3458.268), // = (  860 x 1220 ) mm  = ( 33.86 x 48.03 ) in
2185		'RA1'                    => array( 1729.134,  2437.795), // = (  610 x 860  ) mm  = ( 24.02 x 33.86 ) in
2186		'RA2'                    => array( 1218.898,  1729.134), // = (  430 x 610  ) mm  = ( 16.93 x 24.02 ) in
2187		'RA3'                    => array(  864.567,  1218.898), // = (  305 x 430  ) mm  = ( 12.01 x 16.93 ) in
2188		'RA4'                    => array(  609.449,   864.567), // = (  215 x 305  ) mm  = (  8.46 x 12.01 ) in
2189		'SRA0'                   => array( 2551.181,  3628.346), // = (  900 x 1280 ) mm  = ( 35.43 x 50.39 ) in
2190		'SRA1'                   => array( 1814.173,  2551.181), // = (  640 x 900  ) mm  = ( 25.20 x 35.43 ) in
2191		'SRA2'                   => array( 1275.591,  1814.173), // = (  450 x 640  ) mm  = ( 17.72 x 25.20 ) in
2192		'SRA3'                   => array(  907.087,  1275.591), // = (  320 x 450  ) mm  = ( 12.60 x 17.72 ) in
2193		'SRA4'                   => array(  637.795,   907.087), // = (  225 x 320  ) mm  = (  8.86 x 12.60 ) in
2194		// German DIN 476
2195		'4A0'                    => array( 4767.874,  6740.787), // = ( 1682 x 2378 ) mm  = ( 66.22 x 93.62 ) in
2196		'2A0'                    => array( 3370.394,  4767.874), // = ( 1189 x 1682 ) mm  = ( 46.81 x 66.22 ) in
2197		// Variations on the ISO Standard
2198		'A2_EXTRA'               => array( 1261.417,  1754.646), // = (  445 x 619  ) mm  = ( 17.52 x 24.37 ) in
2199		'A3+'                    => array(  932.598,  1369.134), // = (  329 x 483  ) mm  = ( 12.95 x 19.02 ) in
2200		'A3_EXTRA'               => array(  912.756,  1261.417), // = (  322 x 445  ) mm  = ( 12.68 x 17.52 ) in
2201		'A3_SUPER'               => array(  864.567,  1440.000), // = (  305 x 508  ) mm  = ( 12.01 x 20.00 ) in
2202		'SUPER_A3'               => array(  864.567,  1380.472), // = (  305 x 487  ) mm  = ( 12.01 x 19.17 ) in
2203		'A4_EXTRA'               => array(  666.142,   912.756), // = (  235 x 322  ) mm  = (  9.25 x 12.68 ) in
2204		'A4_SUPER'               => array(  649.134,   912.756), // = (  229 x 322  ) mm  = (  9.02 x 12.68 ) in
2205		'SUPER_A4'               => array(  643.465,  1009.134), // = (  227 x 356  ) mm  = (  8.94 x 14.02 ) in
2206		'A4_LONG'                => array(  595.276,   986.457), // = (  210 x 348  ) mm  = (  8.27 x 13.70 ) in
2207		'F4'                     => array(  595.276,   935.433), // = (  210 x 330  ) mm  = (  8.27 x 12.99 ) in
2208		'SO_B5_EXTRA'            => array(  572.598,   782.362), // = (  202 x 276  ) mm  = (  7.95 x 10.87 ) in
2209		'A5_EXTRA'               => array(  490.394,   666.142), // = (  173 x 235  ) mm  = (  6.81 x 9.25  ) in
2210		// ANSI Series
2211		'ANSI_E'                 => array( 2448.000,  3168.000), // = (  864 x 1118 ) mm  = ( 34.00 x 44.00 ) in
2212		'ANSI_D'                 => array( 1584.000,  2448.000), // = (  559 x 864  ) mm  = ( 22.00 x 34.00 ) in
2213		'ANSI_C'                 => array( 1224.000,  1584.000), // = (  432 x 559  ) mm  = ( 17.00 x 22.00 ) in
2214		'ANSI_B'                 => array(  792.000,  1224.000), // = (  279 x 432  ) mm  = ( 11.00 x 17.00 ) in
2215		'ANSI_A'                 => array(  612.000,   792.000), // = (  216 x 279  ) mm  = (  8.50 x 11.00 ) in
2216		// Traditional 'Loose' North American Paper Sizes
2217		'USLEDGER'               => array( 1224.000,   792.000), // = (  432 x 279  ) mm  = ( 17.00 x 11.00 ) in
2218		'LEDGER'                 => array( 1224.000,   792.000), // = (  432 x 279  ) mm  = ( 17.00 x 11.00 ) in
2219		'ORGANIZERK'             => array(  792.000,  1224.000), // = (  279 x 432  ) mm  = ( 11.00 x 17.00 ) in
2220		'BIBLE'                  => array(  792.000,  1224.000), // = (  279 x 432  ) mm  = ( 11.00 x 17.00 ) in
2221		'USTABLOID'              => array(  792.000,  1224.000), // = (  279 x 432  ) mm  = ( 11.00 x 17.00 ) in
2222		'TABLOID'                => array(  792.000,  1224.000), // = (  279 x 432  ) mm  = ( 11.00 x 17.00 ) in
2223		'ORGANIZERM'             => array(  612.000,   792.000), // = (  216 x 279  ) mm  = (  8.50 x 11.00 ) in
2224		'USLETTER'               => array(  612.000,   792.000), // = (  216 x 279  ) mm  = (  8.50 x 11.00 ) in
2225		'LETTER'                 => array(  612.000,   792.000), // = (  216 x 279  ) mm  = (  8.50 x 11.00 ) in
2226		'USLEGAL'                => array(  612.000,  1008.000), // = (  216 x 356  ) mm  = (  8.50 x 14.00 ) in
2227		'LEGAL'                  => array(  612.000,  1008.000), // = (  216 x 356  ) mm  = (  8.50 x 14.00 ) in
2228		'GOVERNMENTLETTER'       => array(  576.000,   756.000), // = (  203 x 267  ) mm  = (  8.00 x 10.50 ) in
2229		'GLETTER'                => array(  576.000,   756.000), // = (  203 x 267  ) mm  = (  8.00 x 10.50 ) in
2230		'JUNIORLEGAL'            => array(  576.000,   360.000), // = (  203 x 127  ) mm  = (  8.00 x 5.00  ) in
2231		'JLEGAL'                 => array(  576.000,   360.000), // = (  203 x 127  ) mm  = (  8.00 x 5.00  ) in
2232		// Other North American Paper Sizes
2233		'QUADDEMY'               => array( 2520.000,  3240.000), // = (  889 x 1143 ) mm  = ( 35.00 x 45.00 ) in
2234		'SUPER_B'                => array(  936.000,  1368.000), // = (  330 x 483  ) mm  = ( 13.00 x 19.00 ) in
2235		'QUARTO'                 => array(  648.000,   792.000), // = (  229 x 279  ) mm  = (  9.00 x 11.00 ) in
2236		'GOVERNMENTLEGAL'        => array(  612.000,   936.000), // = (  216 x 330  ) mm  = (  8.50 x 13.00 ) in
2237		'FOLIO'                  => array(  612.000,   936.000), // = (  216 x 330  ) mm  = (  8.50 x 13.00 ) in
2238		'MONARCH'                => array(  522.000,   756.000), // = (  184 x 267  ) mm  = (  7.25 x 10.50 ) in
2239		'EXECUTIVE'              => array(  522.000,   756.000), // = (  184 x 267  ) mm  = (  7.25 x 10.50 ) in
2240		'ORGANIZERL'             => array(  396.000,   612.000), // = (  140 x 216  ) mm  = (  5.50 x 8.50  ) in
2241		'STATEMENT'              => array(  396.000,   612.000), // = (  140 x 216  ) mm  = (  5.50 x 8.50  ) in
2242		'MEMO'                   => array(  396.000,   612.000), // = (  140 x 216  ) mm  = (  5.50 x 8.50  ) in
2243		'FOOLSCAP'               => array(  595.440,   936.000), // = (  210 x 330  ) mm  = (  8.27 x 13.00 ) in
2244		'COMPACT'                => array(  306.000,   486.000), // = (  108 x 171  ) mm  = (  4.25 x 6.75  ) in
2245		'ORGANIZERJ'             => array(  198.000,   360.000), // = (   70 x 127  ) mm  = (  2.75 x 5.00  ) in
2246		// Canadian standard CAN 2-9.60M
2247		'P1'                     => array( 1587.402,  2437.795), // = (  560 x 860  ) mm  = ( 22.05 x 33.86 ) in
2248		'P2'                     => array( 1218.898,  1587.402), // = (  430 x 560  ) mm  = ( 16.93 x 22.05 ) in
2249		'P3'                     => array(  793.701,  1218.898), // = (  280 x 430  ) mm  = ( 11.02 x 16.93 ) in
2250		'P4'                     => array(  609.449,   793.701), // = (  215 x 280  ) mm  = (  8.46 x 11.02 ) in
2251		'P5'                     => array(  396.850,   609.449), // = (  140 x 215  ) mm  = (  5.51 x 8.46  ) in
2252		'P6'                     => array(  303.307,   396.850), // = (  107 x 140  ) mm  = (  4.21 x 5.51  ) in
2253		// North American Architectural Sizes
2254		'ARCH_E'                 => array( 2592.000,  3456.000), // = (  914 x 1219 ) mm  = ( 36.00 x 48.00 ) in
2255		'ARCH_E1'                => array( 2160.000,  3024.000), // = (  762 x 1067 ) mm  = ( 30.00 x 42.00 ) in
2256		'ARCH_D'                 => array( 1728.000,  2592.000), // = (  610 x 914  ) mm  = ( 24.00 x 36.00 ) in
2257		'BROADSHEET'             => array( 1296.000,  1728.000), // = (  457 x 610  ) mm  = ( 18.00 x 24.00 ) in
2258		'ARCH_C'                 => array( 1296.000,  1728.000), // = (  457 x 610  ) mm  = ( 18.00 x 24.00 ) in
2259		'ARCH_B'                 => array(  864.000,  1296.000), // = (  305 x 457  ) mm  = ( 12.00 x 18.00 ) in
2260		'ARCH_A'                 => array(  648.000,   864.000), // = (  229 x 305  ) mm  = (  9.00 x 12.00 ) in
2261		// -- North American Envelope Sizes
2262		// - Announcement Envelopes
2263		'ANNENV_A2'              => array(  314.640,   414.000), // = (  111 x 146  ) mm  = (  4.37 x 5.75  ) in
2264		'ANNENV_A6'              => array(  342.000,   468.000), // = (  121 x 165  ) mm  = (  4.75 x 6.50  ) in
2265		'ANNENV_A7'              => array(  378.000,   522.000), // = (  133 x 184  ) mm  = (  5.25 x 7.25  ) in
2266		'ANNENV_A8'              => array(  396.000,   584.640), // = (  140 x 206  ) mm  = (  5.50 x 8.12  ) in
2267		'ANNENV_A10'             => array(  450.000,   692.640), // = (  159 x 244  ) mm  = (  6.25 x 9.62  ) in
2268		'ANNENV_SLIM'            => array(  278.640,   638.640), // = (   98 x 225  ) mm  = (  3.87 x 8.87  ) in
2269		// - Commercial Envelopes
2270		'COMMENV_N6_1/4'         => array(  252.000,   432.000), // = (   89 x 152  ) mm  = (  3.50 x 6.00  ) in
2271		'COMMENV_N6_3/4'         => array(  260.640,   468.000), // = (   92 x 165  ) mm  = (  3.62 x 6.50  ) in
2272		'COMMENV_N8'             => array(  278.640,   540.000), // = (   98 x 191  ) mm  = (  3.87 x 7.50  ) in
2273		'COMMENV_N9'             => array(  278.640,   638.640), // = (   98 x 225  ) mm  = (  3.87 x 8.87  ) in
2274		'COMMENV_N10'            => array(  296.640,   684.000), // = (  105 x 241  ) mm  = (  4.12 x 9.50  ) in
2275		'COMMENV_N11'            => array(  324.000,   746.640), // = (  114 x 263  ) mm  = (  4.50 x 10.37 ) in
2276		'COMMENV_N12'            => array(  342.000,   792.000), // = (  121 x 279  ) mm  = (  4.75 x 11.00 ) in
2277		'COMMENV_N14'            => array(  360.000,   828.000), // = (  127 x 292  ) mm  = (  5.00 x 11.50 ) in
2278		// - Catalogue Envelopes
2279		'CATENV_N1'              => array(  432.000,   648.000), // = (  152 x 229  ) mm  = (  6.00 x 9.00  ) in
2280		'CATENV_N1_3/4'          => array(  468.000,   684.000), // = (  165 x 241  ) mm  = (  6.50 x 9.50  ) in
2281		'CATENV_N2'              => array(  468.000,   720.000), // = (  165 x 254  ) mm  = (  6.50 x 10.00 ) in
2282		'CATENV_N3'              => array(  504.000,   720.000), // = (  178 x 254  ) mm  = (  7.00 x 10.00 ) in
2283		'CATENV_N6'              => array(  540.000,   756.000), // = (  191 x 267  ) mm  = (  7.50 x 10.50 ) in
2284		'CATENV_N7'              => array(  576.000,   792.000), // = (  203 x 279  ) mm  = (  8.00 x 11.00 ) in
2285		'CATENV_N8'              => array(  594.000,   810.000), // = (  210 x 286  ) mm  = (  8.25 x 11.25 ) in
2286		'CATENV_N9_1/2'          => array(  612.000,   756.000), // = (  216 x 267  ) mm  = (  8.50 x 10.50 ) in
2287		'CATENV_N9_3/4'          => array(  630.000,   810.000), // = (  222 x 286  ) mm  = (  8.75 x 11.25 ) in
2288		'CATENV_N10_1/2'         => array(  648.000,   864.000), // = (  229 x 305  ) mm  = (  9.00 x 12.00 ) in
2289		'CATENV_N12_1/2'         => array(  684.000,   900.000), // = (  241 x 318  ) mm  = (  9.50 x 12.50 ) in
2290		'CATENV_N13_1/2'         => array(  720.000,   936.000), // = (  254 x 330  ) mm  = ( 10.00 x 13.00 ) in
2291		'CATENV_N14_1/4'         => array(  810.000,   882.000), // = (  286 x 311  ) mm  = ( 11.25 x 12.25 ) in
2292		'CATENV_N14_1/2'         => array(  828.000,  1044.000), // = (  292 x 368  ) mm  = ( 11.50 x 14.50 ) in
2293		// Japanese (JIS P 0138-61) Standard B-Series
2294		'JIS_B0'                 => array( 2919.685,  4127.244), // = ( 1030 x 1456 ) mm  = ( 40.55 x 57.32 ) in
2295		'JIS_B1'                 => array( 2063.622,  2919.685), // = (  728 x 1030 ) mm  = ( 28.66 x 40.55 ) in
2296		'JIS_B2'                 => array( 1459.843,  2063.622), // = (  515 x 728  ) mm  = ( 20.28 x 28.66 ) in
2297		'JIS_B3'                 => array( 1031.811,  1459.843), // = (  364 x 515  ) mm  = ( 14.33 x 20.28 ) in
2298		'JIS_B4'                 => array(  728.504,  1031.811), // = (  257 x 364  ) mm  = ( 10.12 x 14.33 ) in
2299		'JIS_B5'                 => array(  515.906,   728.504), // = (  182 x 257  ) mm  = (  7.17 x 10.12 ) in
2300		'JIS_B6'                 => array(  362.835,   515.906), // = (  128 x 182  ) mm  = (  5.04 x 7.17  ) in
2301		'JIS_B7'                 => array(  257.953,   362.835), // = (   91 x 128  ) mm  = (  3.58 x 5.04  ) in
2302		'JIS_B8'                 => array(  181.417,   257.953), // = (   64 x 91   ) mm  = (  2.52 x 3.58  ) in
2303		'JIS_B9'                 => array(  127.559,   181.417), // = (   45 x 64   ) mm  = (  1.77 x 2.52  ) in
2304		'JIS_B10'                => array(   90.709,   127.559), // = (   32 x 45   ) mm  = (  1.26 x 1.77  ) in
2305		'JIS_B11'                => array(   62.362,    90.709), // = (   22 x 32   ) mm  = (  0.87 x 1.26  ) in
2306		'JIS_B12'                => array(   45.354,    62.362), // = (   16 x 22   ) mm  = (  0.63 x 0.87  ) in
2307		// PA Series
2308		'PA0'                    => array( 2381.102,  3174.803), // = (  840 x 1120 ) mm  = ( 33.07 x 44.09 ) in
2309		'PA1'                    => array( 1587.402,  2381.102), // = (  560 x 840  ) mm  = ( 22.05 x 33.07 ) in
2310		'PA2'                    => array( 1190.551,  1587.402), // = (  420 x 560  ) mm  = ( 16.54 x 22.05 ) in
2311		'PA3'                    => array(  793.701,  1190.551), // = (  280 x 420  ) mm  = ( 11.02 x 16.54 ) in
2312		'PA4'                    => array(  595.276,   793.701), // = (  210 x 280  ) mm  = (  8.27 x 11.02 ) in
2313		'PA5'                    => array(  396.850,   595.276), // = (  140 x 210  ) mm  = (  5.51 x 8.27  ) in
2314		'PA6'                    => array(  297.638,   396.850), // = (  105 x 140  ) mm  = (  4.13 x 5.51  ) in
2315		'PA7'                    => array(  198.425,   297.638), // = (   70 x 105  ) mm  = (  2.76 x 4.13  ) in
2316		'PA8'                    => array(  147.402,   198.425), // = (   52 x 70   ) mm  = (  2.05 x 2.76  ) in
2317		'PA9'                    => array(   99.213,   147.402), // = (   35 x 52   ) mm  = (  1.38 x 2.05  ) in
2318		'PA10'                   => array(   73.701,    99.213), // = (   26 x 35   ) mm  = (  1.02 x 1.38  ) in
2319		// Standard Photographic Print Sizes
2320		'PASSPORT_PHOTO'         => array(   99.213,   127.559), // = (   35 x 45   ) mm  = (  1.38 x 1.77  ) in
2321		'E'                      => array(  233.858,   340.157), // = (   82 x 120  ) mm  = (  3.25 x 4.72  ) in
2322		'L'                      => array(  252.283,   360.000), // = (   89 x 127  ) mm  = (  3.50 x 5.00  ) in
2323		'3R'                     => array(  252.283,   360.000), // = (   89 x 127  ) mm  = (  3.50 x 5.00  ) in
2324		'KG'                     => array(  289.134,   430.866), // = (  102 x 152  ) mm  = (  4.02 x 5.98  ) in
2325		'4R'                     => array(  289.134,   430.866), // = (  102 x 152  ) mm  = (  4.02 x 5.98  ) in
2326		'4D'                     => array(  340.157,   430.866), // = (  120 x 152  ) mm  = (  4.72 x 5.98  ) in
2327		'2L'                     => array(  360.000,   504.567), // = (  127 x 178  ) mm  = (  5.00 x 7.01  ) in
2328		'5R'                     => array(  360.000,   504.567), // = (  127 x 178  ) mm  = (  5.00 x 7.01  ) in
2329		'8P'                     => array(  430.866,   575.433), // = (  152 x 203  ) mm  = (  5.98 x 7.99  ) in
2330		'6R'                     => array(  430.866,   575.433), // = (  152 x 203  ) mm  = (  5.98 x 7.99  ) in
2331		'6P'                     => array(  575.433,   720.000), // = (  203 x 254  ) mm  = (  7.99 x 10.00 ) in
2332		'8R'                     => array(  575.433,   720.000), // = (  203 x 254  ) mm  = (  7.99 x 10.00 ) in
2333		'6PW'                    => array(  575.433,   864.567), // = (  203 x 305  ) mm  = (  7.99 x 12.01 ) in
2334		'S8R'                    => array(  575.433,   864.567), // = (  203 x 305  ) mm  = (  7.99 x 12.01 ) in
2335		'4P'                     => array(  720.000,   864.567), // = (  254 x 305  ) mm  = ( 10.00 x 12.01 ) in
2336		'10R'                    => array(  720.000,   864.567), // = (  254 x 305  ) mm  = ( 10.00 x 12.01 ) in
2337		'4PW'                    => array(  720.000,  1080.000), // = (  254 x 381  ) mm  = ( 10.00 x 15.00 ) in
2338		'S10R'                   => array(  720.000,  1080.000), // = (  254 x 381  ) mm  = ( 10.00 x 15.00 ) in
2339		'11R'                    => array(  790.866,  1009.134), // = (  279 x 356  ) mm  = ( 10.98 x 14.02 ) in
2340		'S11R'                   => array(  790.866,  1224.567), // = (  279 x 432  ) mm  = ( 10.98 x 17.01 ) in
2341		'12R'                    => array(  864.567,  1080.000), // = (  305 x 381  ) mm  = ( 12.01 x 15.00 ) in
2342		'S12R'                   => array(  864.567,  1292.598), // = (  305 x 456  ) mm  = ( 12.01 x 17.95 ) in
2343		// Common Newspaper Sizes
2344		'NEWSPAPER_BROADSHEET'   => array( 2125.984,  1700.787), // = (  750 x 600  ) mm  = ( 29.53 x 23.62 ) in
2345		'NEWSPAPER_BERLINER'     => array( 1332.283,   892.913), // = (  470 x 315  ) mm  = ( 18.50 x 12.40 ) in
2346		'NEWSPAPER_TABLOID'      => array( 1218.898,   793.701), // = (  430 x 280  ) mm  = ( 16.93 x 11.02 ) in
2347		'NEWSPAPER_COMPACT'      => array( 1218.898,   793.701), // = (  430 x 280  ) mm  = ( 16.93 x 11.02 ) in
2348		// Business Cards
2349		'CREDIT_CARD'            => array(  153.014,   242.646), // = (   54 x 86   ) mm  = (  2.13 x 3.37  ) in
2350		'BUSINESS_CARD'          => array(  153.014,   242.646), // = (   54 x 86   ) mm  = (  2.13 x 3.37  ) in
2351		'BUSINESS_CARD_ISO7810'  => array(  153.014,   242.646), // = (   54 x 86   ) mm  = (  2.13 x 3.37  ) in
2352		'BUSINESS_CARD_ISO216'   => array(  147.402,   209.764), // = (   52 x 74   ) mm  = (  2.05 x 2.91  ) in
2353		'BUSINESS_CARD_IT'       => array(  155.906,   240.945), // = (   55 x 85   ) mm  = (  2.17 x 3.35  ) in
2354		'BUSINESS_CARD_UK'       => array(  155.906,   240.945), // = (   55 x 85   ) mm  = (  2.17 x 3.35  ) in
2355		'BUSINESS_CARD_FR'       => array(  155.906,   240.945), // = (   55 x 85   ) mm  = (  2.17 x 3.35  ) in
2356		'BUSINESS_CARD_DE'       => array(  155.906,   240.945), // = (   55 x 85   ) mm  = (  2.17 x 3.35  ) in
2357		'BUSINESS_CARD_ES'       => array(  155.906,   240.945), // = (   55 x 85   ) mm  = (  2.17 x 3.35  ) in
2358		'BUSINESS_CARD_CA'       => array(  144.567,   252.283), // = (   51 x 89   ) mm  = (  2.01 x 3.50  ) in
2359		'BUSINESS_CARD_US'       => array(  144.567,   252.283), // = (   51 x 89   ) mm  = (  2.01 x 3.50  ) in
2360		'BUSINESS_CARD_JP'       => array(  155.906,   257.953), // = (   55 x 91   ) mm  = (  2.17 x 3.58  ) in
2361		'BUSINESS_CARD_HK'       => array(  153.071,   255.118), // = (   54 x 90   ) mm  = (  2.13 x 3.54  ) in
2362		'BUSINESS_CARD_AU'       => array(  155.906,   255.118), // = (   55 x 90   ) mm  = (  2.17 x 3.54  ) in
2363		'BUSINESS_CARD_DK'       => array(  155.906,   255.118), // = (   55 x 90   ) mm  = (  2.17 x 3.54  ) in
2364		'BUSINESS_CARD_SE'       => array(  155.906,   255.118), // = (   55 x 90   ) mm  = (  2.17 x 3.54  ) in
2365		'BUSINESS_CARD_RU'       => array(  141.732,   255.118), // = (   50 x 90   ) mm  = (  1.97 x 3.54  ) in
2366		'BUSINESS_CARD_CZ'       => array(  141.732,   255.118), // = (   50 x 90   ) mm  = (  1.97 x 3.54  ) in
2367		'BUSINESS_CARD_FI'       => array(  141.732,   255.118), // = (   50 x 90   ) mm  = (  1.97 x 3.54  ) in
2368		'BUSINESS_CARD_HU'       => array(  141.732,   255.118), // = (   50 x 90   ) mm  = (  1.97 x 3.54  ) in
2369		'BUSINESS_CARD_IL'       => array(  141.732,   255.118), // = (   50 x 90   ) mm  = (  1.97 x 3.54  ) in
2370		// Billboards
2371		'4SHEET'                 => array( 2880.000,  4320.000), // = ( 1016 x 1524 ) mm  = ( 40.00 x 60.00 ) in
2372		'6SHEET'                 => array( 3401.575,  5102.362), // = ( 1200 x 1800 ) mm  = ( 47.24 x 70.87 ) in
2373		'12SHEET'                => array( 8640.000,  4320.000), // = ( 3048 x 1524 ) mm  = (120.00 x 60.00 ) in
2374		'16SHEET'                => array( 5760.000,  8640.000), // = ( 2032 x 3048 ) mm  = ( 80.00 x 120.00) in
2375		'32SHEET'                => array(11520.000,  8640.000), // = ( 4064 x 3048 ) mm  = (160.00 x 120.00) in
2376		'48SHEET'                => array(17280.000,  8640.000), // = ( 6096 x 3048 ) mm  = (240.00 x 120.00) in
2377		'64SHEET'                => array(23040.000,  8640.000), // = ( 8128 x 3048 ) mm  = (320.00 x 120.00) in
2378		'96SHEET'                => array(34560.000,  8640.000), // = (12192 x 3048 ) mm  = (480.00 x 120.00) in
2379		// -- Old European Sizes
2380		// - Old Imperial English Sizes
2381		'EN_EMPEROR'             => array( 3456.000,  5184.000), // = ( 1219 x 1829 ) mm  = ( 48.00 x 72.00 ) in
2382		'EN_ANTIQUARIAN'         => array( 2232.000,  3816.000), // = (  787 x 1346 ) mm  = ( 31.00 x 53.00 ) in
2383		'EN_GRAND_EAGLE'         => array( 2070.000,  3024.000), // = (  730 x 1067 ) mm  = ( 28.75 x 42.00 ) in
2384		'EN_DOUBLE_ELEPHANT'     => array( 1926.000,  2880.000), // = (  679 x 1016 ) mm  = ( 26.75 x 40.00 ) in
2385		'EN_ATLAS'               => array( 1872.000,  2448.000), // = (  660 x 864  ) mm  = ( 26.00 x 34.00 ) in
2386		'EN_COLOMBIER'           => array( 1692.000,  2484.000), // = (  597 x 876  ) mm  = ( 23.50 x 34.50 ) in
2387		'EN_ELEPHANT'            => array( 1656.000,  2016.000), // = (  584 x 711  ) mm  = ( 23.00 x 28.00 ) in
2388		'EN_DOUBLE_DEMY'         => array( 1620.000,  2556.000), // = (  572 x 902  ) mm  = ( 22.50 x 35.50 ) in
2389		'EN_IMPERIAL'            => array( 1584.000,  2160.000), // = (  559 x 762  ) mm  = ( 22.00 x 30.00 ) in
2390		'EN_PRINCESS'            => array( 1548.000,  2016.000), // = (  546 x 711  ) mm  = ( 21.50 x 28.00 ) in
2391		'EN_CARTRIDGE'           => array( 1512.000,  1872.000), // = (  533 x 660  ) mm  = ( 21.00 x 26.00 ) in
2392		'EN_DOUBLE_LARGE_POST'   => array( 1512.000,  2376.000), // = (  533 x 838  ) mm  = ( 21.00 x 33.00 ) in
2393		'EN_ROYAL'               => array( 1440.000,  1800.000), // = (  508 x 635  ) mm  = ( 20.00 x 25.00 ) in
2394		'EN_SHEET'               => array( 1404.000,  1692.000), // = (  495 x 597  ) mm  = ( 19.50 x 23.50 ) in
2395		'EN_HALF_POST'           => array( 1404.000,  1692.000), // = (  495 x 597  ) mm  = ( 19.50 x 23.50 ) in
2396		'EN_SUPER_ROYAL'         => array( 1368.000,  1944.000), // = (  483 x 686  ) mm  = ( 19.00 x 27.00 ) in
2397		'EN_DOUBLE_POST'         => array( 1368.000,  2196.000), // = (  483 x 775  ) mm  = ( 19.00 x 30.50 ) in
2398		'EN_MEDIUM'              => array( 1260.000,  1656.000), // = (  445 x 584  ) mm  = ( 17.50 x 23.00 ) in
2399		'EN_DEMY'                => array( 1260.000,  1620.000), // = (  445 x 572  ) mm  = ( 17.50 x 22.50 ) in
2400		'EN_LARGE_POST'          => array( 1188.000,  1512.000), // = (  419 x 533  ) mm  = ( 16.50 x 21.00 ) in
2401		'EN_COPY_DRAUGHT'        => array( 1152.000,  1440.000), // = (  406 x 508  ) mm  = ( 16.00 x 20.00 ) in
2402		'EN_POST'                => array( 1116.000,  1386.000), // = (  394 x 489  ) mm  = ( 15.50 x 19.25 ) in
2403		'EN_CROWN'               => array( 1080.000,  1440.000), // = (  381 x 508  ) mm  = ( 15.00 x 20.00 ) in
2404		'EN_PINCHED_POST'        => array( 1062.000,  1332.000), // = (  375 x 470  ) mm  = ( 14.75 x 18.50 ) in
2405		'EN_BRIEF'               => array(  972.000,  1152.000), // = (  343 x 406  ) mm  = ( 13.50 x 16.00 ) in
2406		'EN_FOOLSCAP'            => array(  972.000,  1224.000), // = (  343 x 432  ) mm  = ( 13.50 x 17.00 ) in
2407		'EN_SMALL_FOOLSCAP'      => array(  954.000,  1188.000), // = (  337 x 419  ) mm  = ( 13.25 x 16.50 ) in
2408		'EN_POTT'                => array(  900.000,  1080.000), // = (  318 x 381  ) mm  = ( 12.50 x 15.00 ) in
2409		// - Old Imperial Belgian Sizes
2410		'BE_GRAND_AIGLE'         => array( 1984.252,  2948.031), // = (  700 x 1040 ) mm  = ( 27.56 x 40.94 ) in
2411		'BE_COLOMBIER'           => array( 1757.480,  2409.449), // = (  620 x 850  ) mm  = ( 24.41 x 33.46 ) in
2412		'BE_DOUBLE_CARRE'        => array( 1757.480,  2607.874), // = (  620 x 920  ) mm  = ( 24.41 x 36.22 ) in
2413		'BE_ELEPHANT'            => array( 1746.142,  2182.677), // = (  616 x 770  ) mm  = ( 24.25 x 30.31 ) in
2414		'BE_PETIT_AIGLE'         => array( 1700.787,  2381.102), // = (  600 x 840  ) mm  = ( 23.62 x 33.07 ) in
2415		'BE_GRAND_JESUS'         => array( 1559.055,  2069.291), // = (  550 x 730  ) mm  = ( 21.65 x 28.74 ) in
2416		'BE_JESUS'               => array( 1530.709,  2069.291), // = (  540 x 730  ) mm  = ( 21.26 x 28.74 ) in
2417		'BE_RAISIN'              => array( 1417.323,  1842.520), // = (  500 x 650  ) mm  = ( 19.69 x 25.59 ) in
2418		'BE_GRAND_MEDIAN'        => array( 1303.937,  1714.961), // = (  460 x 605  ) mm  = ( 18.11 x 23.82 ) in
2419		'BE_DOUBLE_POSTE'        => array( 1233.071,  1601.575), // = (  435 x 565  ) mm  = ( 17.13 x 22.24 ) in
2420		'BE_COQUILLE'            => array( 1218.898,  1587.402), // = (  430 x 560  ) mm  = ( 16.93 x 22.05 ) in
2421		'BE_PETIT_MEDIAN'        => array( 1176.378,  1502.362), // = (  415 x 530  ) mm  = ( 16.34 x 20.87 ) in
2422		'BE_RUCHE'               => array( 1020.472,  1303.937), // = (  360 x 460  ) mm  = ( 14.17 x 18.11 ) in
2423		'BE_PROPATRIA'           => array(  977.953,  1218.898), // = (  345 x 430  ) mm  = ( 13.58 x 16.93 ) in
2424		'BE_LYS'                 => array(  898.583,  1125.354), // = (  317 x 397  ) mm  = ( 12.48 x 15.63 ) in
2425		'BE_POT'                 => array(  870.236,  1088.504), // = (  307 x 384  ) mm  = ( 12.09 x 15.12 ) in
2426		'BE_ROSETTE'             => array(  765.354,   983.622), // = (  270 x 347  ) mm  = ( 10.63 x 13.66 ) in
2427		// - Old Imperial French Sizes
2428		'FR_UNIVERS'             => array( 2834.646,  3685.039), // = ( 1000 x 1300 ) mm  = ( 39.37 x 51.18 ) in
2429		'FR_DOUBLE_COLOMBIER'    => array( 2551.181,  3571.654), // = (  900 x 1260 ) mm  = ( 35.43 x 49.61 ) in
2430		'FR_GRANDE_MONDE'        => array( 2551.181,  3571.654), // = (  900 x 1260 ) mm  = ( 35.43 x 49.61 ) in
2431		'FR_DOUBLE_SOLEIL'       => array( 2267.717,  3401.575), // = (  800 x 1200 ) mm  = ( 31.50 x 47.24 ) in
2432		'FR_DOUBLE_JESUS'        => array( 2154.331,  3174.803), // = (  760 x 1120 ) mm  = ( 29.92 x 44.09 ) in
2433		'FR_GRAND_AIGLE'         => array( 2125.984,  3004.724), // = (  750 x 1060 ) mm  = ( 29.53 x 41.73 ) in
2434		'FR_PETIT_AIGLE'         => array( 1984.252,  2664.567), // = (  700 x 940  ) mm  = ( 27.56 x 37.01 ) in
2435		'FR_DOUBLE_RAISIN'       => array( 1842.520,  2834.646), // = (  650 x 1000 ) mm  = ( 25.59 x 39.37 ) in
2436		'FR_JOURNAL'             => array( 1842.520,  2664.567), // = (  650 x 940  ) mm  = ( 25.59 x 37.01 ) in
2437		'FR_COLOMBIER_AFFICHE'   => array( 1785.827,  2551.181), // = (  630 x 900  ) mm  = ( 24.80 x 35.43 ) in
2438		'FR_DOUBLE_CAVALIER'     => array( 1757.480,  2607.874), // = (  620 x 920  ) mm  = ( 24.41 x 36.22 ) in
2439		'FR_CLOCHE'              => array( 1700.787,  2267.717), // = (  600 x 800  ) mm  = ( 23.62 x 31.50 ) in
2440		'FR_SOLEIL'              => array( 1700.787,  2267.717), // = (  600 x 800  ) mm  = ( 23.62 x 31.50 ) in
2441		'FR_DOUBLE_CARRE'        => array( 1587.402,  2551.181), // = (  560 x 900  ) mm  = ( 22.05 x 35.43 ) in
2442		'FR_DOUBLE_COQUILLE'     => array( 1587.402,  2494.488), // = (  560 x 880  ) mm  = ( 22.05 x 34.65 ) in
2443		'FR_JESUS'               => array( 1587.402,  2154.331), // = (  560 x 760  ) mm  = ( 22.05 x 29.92 ) in
2444		'FR_RAISIN'              => array( 1417.323,  1842.520), // = (  500 x 650  ) mm  = ( 19.69 x 25.59 ) in
2445		'FR_CAVALIER'            => array( 1303.937,  1757.480), // = (  460 x 620  ) mm  = ( 18.11 x 24.41 ) in
2446		'FR_DOUBLE_COURONNE'     => array( 1303.937,  2040.945), // = (  460 x 720  ) mm  = ( 18.11 x 28.35 ) in
2447		'FR_CARRE'               => array( 1275.591,  1587.402), // = (  450 x 560  ) mm  = ( 17.72 x 22.05 ) in
2448		'FR_COQUILLE'            => array( 1247.244,  1587.402), // = (  440 x 560  ) mm  = ( 17.32 x 22.05 ) in
2449		'FR_DOUBLE_TELLIERE'     => array( 1247.244,  1927.559), // = (  440 x 680  ) mm  = ( 17.32 x 26.77 ) in
2450		'FR_DOUBLE_CLOCHE'       => array( 1133.858,  1700.787), // = (  400 x 600  ) mm  = ( 15.75 x 23.62 ) in
2451		'FR_DOUBLE_POT'          => array( 1133.858,  1757.480), // = (  400 x 620  ) mm  = ( 15.75 x 24.41 ) in
2452		'FR_ECU'                 => array( 1133.858,  1474.016), // = (  400 x 520  ) mm  = ( 15.75 x 20.47 ) in
2453		'FR_COURONNE'            => array( 1020.472,  1303.937), // = (  360 x 460  ) mm  = ( 14.17 x 18.11 ) in
2454		'FR_TELLIERE'            => array(  963.780,  1247.244), // = (  340 x 440  ) mm  = ( 13.39 x 17.32 ) in
2455		'FR_POT'                 => array(  878.740,  1133.858), // = (  310 x 400  ) mm  = ( 12.20 x 15.75 ) in
2456	);
2457
2458
2459	/**
2460	 * Get page dimensions from format name.
2461	 * @param $format (mixed) The format name @see self::$page_format<ul>
2462	 * @return array containing page width and height in points
2463	 * @since 5.0.010 (2010-05-17)
2464	 * @public static
2465	 */
2466	public static function getPageSizeFromFormat($format) {
2467		if (isset(self::$page_formats[$format])) {
2468			return self::$page_formats[$format];
2469		}
2470		return self::$page_formats['A4'];
2471	}
2472
2473	/**
2474	 * Set page boundaries.
2475	 * @param $page (int) page number
2476	 * @param $type (string) valid values are: <ul><li>'MediaBox' : the boundaries of the physical medium on which the page shall be displayed or printed;</li><li>'CropBox' : the visible region of default user space;</li><li>'BleedBox' : the region to which the contents of the page shall be clipped when output in a production environment;</li><li>'TrimBox' : the intended dimensions of the finished page after trimming;</li><li>'ArtBox' : the page's meaningful content (including potential white space).</li></ul>
2477	 * @param $llx (float) lower-left x coordinate in user units.
2478	 * @param $lly (float) lower-left y coordinate in user units.
2479	 * @param $urx (float) upper-right x coordinate in user units.
2480	 * @param $ury (float) upper-right y coordinate in user units.
2481	 * @param $points (boolean) If true uses user units as unit of measure, otherwise uses PDF points.
2482	 * @param $k (float) Scale factor (number of points in user unit).
2483	 * @param $pagedim (array) Array of page dimensions.
2484	 * @return pagedim array of page dimensions.
2485	 * @since 5.0.010 (2010-05-17)
2486	 * @public static
2487	 */
2488	public static function setPageBoxes($page, $type, $llx, $lly, $urx, $ury, $points=false, $k, $pagedim=array()) {
2489		if (!isset($pagedim[$page])) {
2490			// initialize array
2491			$pagedim[$page] = array();
2492		}
2493		if (!in_array($type, self::$pageboxes)) {
2494			return;
2495		}
2496		if ($points) {
2497			$k = 1;
2498		}
2499		$pagedim[$page][$type]['llx'] = ($llx * $k);
2500		$pagedim[$page][$type]['lly'] = ($lly * $k);
2501		$pagedim[$page][$type]['urx'] = ($urx * $k);
2502		$pagedim[$page][$type]['ury'] = ($ury * $k);
2503		return $pagedim;
2504	}
2505
2506	/**
2507	 * Swap X and Y coordinates of page boxes (change page boxes orientation).
2508	 * @param $page (int) page number
2509	 * @param $pagedim (array) Array of page dimensions.
2510	 * @return pagedim array of page dimensions.
2511	 * @since 5.0.010 (2010-05-17)
2512	 * @public static
2513	 */
2514	public static function swapPageBoxCoordinates($page, $pagedim) {
2515		foreach (self::$pageboxes as $type) {
2516			// swap X and Y coordinates
2517			if (isset($pagedim[$page][$type])) {
2518				$tmp = $pagedim[$page][$type]['llx'];
2519				$pagedim[$page][$type]['llx'] = $pagedim[$page][$type]['lly'];
2520				$pagedim[$page][$type]['lly'] = $tmp;
2521				$tmp = $pagedim[$page][$type]['urx'];
2522				$pagedim[$page][$type]['urx'] = $pagedim[$page][$type]['ury'];
2523				$pagedim[$page][$type]['ury'] = $tmp;
2524			}
2525		}
2526		return $pagedim;
2527	}
2528
2529	/**
2530	 * Get the canonical page layout mode.
2531	 * @param $layout (string) The page layout. Possible values are:<ul><li>SinglePage Display one page at a time</li><li>OneColumn Display the pages in one column</li><li>TwoColumnLeft Display the pages in two columns, with odd-numbered pages on the left</li><li>TwoColumnRight Display the pages in two columns, with odd-numbered pages on the right</li><li>TwoPageLeft (PDF 1.5) Display the pages two at a time, with odd-numbered pages on the left</li><li>TwoPageRight (PDF 1.5) Display the pages two at a time, with odd-numbered pages on the right</li></ul>
2532	 * @return (string) Canonical page layout name.
2533	 * @public static
2534	 */
2535	public static function getPageLayoutMode($layout='SinglePage') {
2536		switch ($layout) {
2537			case 'default':
2538			case 'single':
2539			case 'SinglePage': {
2540				$layout_mode = 'SinglePage';
2541				break;
2542			}
2543			case 'continuous':
2544			case 'OneColumn': {
2545				$layout_mode = 'OneColumn';
2546				break;
2547			}
2548			case 'two':
2549			case 'TwoColumnLeft': {
2550				$layout_mode = 'TwoColumnLeft';
2551				break;
2552			}
2553			case 'TwoColumnRight': {
2554				$layout_mode = 'TwoColumnRight';
2555				break;
2556			}
2557			case 'TwoPageLeft': {
2558				$layout_mode = 'TwoPageLeft';
2559				break;
2560			}
2561			case 'TwoPageRight': {
2562				$layout_mode = 'TwoPageRight';
2563				break;
2564			}
2565			default: {
2566				$layout_mode = 'SinglePage';
2567			}
2568		}
2569		return $layout_mode;
2570	}
2571
2572	/**
2573	 * Get the canonical page layout mode.
2574	 * @param $mode (string) A name object specifying how the document should be displayed when opened:<ul><li>UseNone Neither document outline nor thumbnail images visible</li><li>UseOutlines Document outline visible</li><li>UseThumbs Thumbnail images visible</li><li>FullScreen Full-screen mode, with no menu bar, window controls, or any other window visible</li><li>UseOC (PDF 1.5) Optional content group panel visible</li><li>UseAttachments (PDF 1.6) Attachments panel visible</li></ul>
2575	 * @return (string) Canonical page mode name.
2576	 * @public static
2577	 */
2578	public static function getPageMode($mode='UseNone') {
2579		switch ($mode) {
2580			case 'UseNone': {
2581				$page_mode = 'UseNone';
2582				break;
2583			}
2584			case 'UseOutlines': {
2585				$page_mode = 'UseOutlines';
2586				break;
2587			}
2588			case 'UseThumbs': {
2589				$page_mode = 'UseThumbs';
2590				break;
2591			}
2592			case 'FullScreen': {
2593				$page_mode = 'FullScreen';
2594				break;
2595			}
2596			case 'UseOC': {
2597				$page_mode = 'UseOC';
2598				break;
2599			}
2600			case '': {
2601				$page_mode = 'UseAttachments';
2602				break;
2603			}
2604			default: {
2605				$page_mode = 'UseNone';
2606			}
2607		}
2608		return $page_mode;
2609	}
2610
2611
2612} // END OF TCPDF_STATIC CLASS
2613
2614//============================================================+
2615// END OF FILE
2616//============================================================+
2617