html_entity_decode_php4.php

简介：一个用PHP编写的

<?php
//============================================================+
// File name   : html_entity_decode_php4.php
// Begin       : 2006-06-22
// Last Update : 2006-06-22
// Author      : Nicola Asuni
// Version     : 1.0.000
// License     : GNU LGPL (http://www.gnu.org/copyleft/lesser.html)
//
// Description : This is a PHP4 function that redefine the 
//               standard html_entity_decode function to support
//               UTF-8 encoding.
//
//============================================================+

/**
 * TCPDF Class.
 * @package com.tecnick.tcpdf
 */


/**
 * Returns the UTF-8 string corresponding to unicode value.
 * @param $num unicode value to convert.
 * @return string converted
 */
function code_to_utf8($num) {
	if ($num <= 0x7F) {
		return chr($num);
	} elseif ($num <= 0x7FF) {
		return chr(($num >> 0x06) + 0xC0).chr(($num & 0x3F) + 128);
	} elseif ($num <= 0xFFFF) {
		return chr(($num >> 0x0C) + 0xE0).chr((($num >> 0x06) & 0x3F) + 0x80).chr(($num & 0x3F) + 0x80);
	} elseif ($num <= 0x1FFFFF) {
		return chr(($num >> 0x12) + 0xF0).chr((($num >> 0x0C) & 0x3F) + 0x80).chr((($num >> 0x06) & 0x3F) + 0x80).chr(($num & 0x3F) + 0x80);
	}
	return ' '; // default value
}

/**
 * Reverse function for htmlentities.
 * Convert entities in UTF-8.
 * @param $text_to_convert Text to convert.
 * @return string converted
 */
function html_entity_decode_php4($text_to_convert) {
	$htmlentities_table = array (
		"&Aacute;" => "".chr(195).chr(129)."",
		"&aacute;" => "".chr(195).chr(161)."",
		"&Acirc;" => "".chr(195).chr(130)."",
		"&acirc;" => "".chr(195).chr(162)."",
		"&acute;" => "".chr(194).chr(180)."",
		"&AElig;" => "".chr(195).chr(134)."",
		"&aelig;" => "".chr(195).chr(166)."",
		"&Agrave;" => "".chr(195).chr(128)."",
		"&agrave;" => "".chr(195).chr(160)."",
		"&alefsym;" => "".chr(226).chr(132).chr(181)."",
		"&Alpha;" => "".chr(206).chr(145)."",
		"&alpha;" => "".chr(206).chr(177)."",
		"&amp;" => "".chr(38)."",
		"&and;" => "".chr(226).chr(136).chr(167)."",
		"&ang;" => "".chr(226).chr(136).chr(160)."",
		"&Aring;" => "".chr(195).chr(133)."",
		"&aring;" => "".chr(195).chr(165)."",
		"&asymp;" => "".chr(226).chr(137).chr(136)."",
		"&Atilde;" => "".chr(195).chr(131)."",
		"&atilde;" => "".chr(195).chr(163)."",
		"&Auml;" => "".chr(195).chr(132)."",
		"&auml;" => "".chr(195).chr(164)."",
		"&bdquo;" => "".chr(226).chr(128).chr(158)."",
		"&Beta;" => "".chr(206).chr(146)."",
		"&beta;" => "".chr(206).chr(178)."",
		"&brvbar;" => "".chr(194).chr(166)."",
		"&bull;" => "".chr(226).chr(128).chr(162)."",
		"&cap;" => "".chr(226).chr(136).chr(169)."",
		"&Ccedil;" => "".chr(195).chr(135)."",
		"&ccedil;" => "".chr(195).chr(167)."",
		"&cedil;" => "".chr(194).chr(184)."",
		"&cent;" => "".chr(194).chr(162)."",
		"&Chi;" => "".chr(206).chr(167)."",
		"&chi;" => "".chr(207).chr(135)."",
		"&circ;" => "".chr(203).chr(134)."",
		"&clubs;" => "".chr(226).chr(153).chr(163)."",
		"&cong;" => "".chr(226).chr(137).chr(133)."",
		"&copy;" => "".chr(194).chr(169)."",
		"&crarr;" => "".chr(226).chr(134).chr(181)."",
		"&cup;" => "".chr(226).chr(136).chr(170)."",
		"&curren;" => "".chr(194).chr(164)."",
		"&dagger;" => "".chr(226).chr(128).chr(160)."",
		"&Dagger;" => "".chr(226).chr(128).chr(161)."",
		"&darr;" => "".chr(226).chr(134).chr(147)."",
		"&dArr;" => "".chr(226).chr(135).chr(147)."",
		"&deg;" => "".chr(194).chr(176)."",
		"&Delta;" => "".chr(206).chr(148)."",
		"&delta;" => "".chr(206).chr(180)."",
		"&diams;" => "".chr(226).chr(153).chr(166)."",
		"&divide;" => "".chr(195).chr(183)."",
		"&Eacute;" => "".chr(195).chr(137)."",
		"&eacute;" => "".chr(195).chr(169)."",
		"&Ecirc;" => "".chr(195).chr(138)."",
		"&ecirc;" => "".chr(195).chr(170)."",
		"&Egrave;" => "".chr(195).chr(136)."",
		"&egrave;" => "".chr(195).chr(168)."",
		"&empty;" => "".chr(226).chr(136).chr(133)."",
		"&emsp;" => "".chr(226).chr(128).chr(131)."",
		"&ensp;" => "".chr(226).chr(128).chr(130)."",
		"&Epsilon;" => "".chr(206).chr(149)."",
		"&epsilon;" => "".chr(206).chr(181)."",
		"&equiv;" => "".chr(226).chr(137).chr(161)."",
		"&Eta;" => "".chr(206).chr(151)."",
		"&eta;" => "".chr(206).chr(183)."",
		"&ETH;" => "".chr(195).chr(144)."",
		"&eth;" => "".chr(195).chr(176)."",
		"&Euml;" => "".chr(195).chr(139)."",
		"&euml;" => "".chr(195).chr(171)."",
		"&euro;" => "".chr(226).chr(130).chr(172)."",
		"&exist;" => "".chr(226).chr(136).chr(131)."",
		"&fnof;" => "".chr(198).chr(146)."",
		"&forall;" => "".chr(226).chr(136).chr(128)."",
		"&frac12;" => "".chr(194).chr(189)."",
		"&frac14;" => "".chr(194).chr(188)."",
		"&frac34;" => "".chr(194).chr(190)."",
		"&frasl;" => "".chr(226).chr(129).chr(132)."",
		"&Gamma;" => "".chr(206).chr(147)."",
		"&gamma;" => "".chr(206).chr(179)."",
		"&ge;" => "".chr(226).chr(137).chr(165)."",
		"&harr;" => "".chr(226).chr(134).chr(148)."",
		"&hArr;" => "".chr(226).chr(135).chr(148)."",
		"&hearts;" => "".chr(226).chr(153).chr(165)."",
		"&hellip;" => "".chr(226).chr(128).chr(166)."",
		"&Iacute;" => "".chr(195).chr(141)."",
		"&iacute;" => "".chr(195).chr(173)."",
		"&Icirc;" => "".chr(195).chr(142)."",
		"&icirc;" => "".chr(195).chr(174)."",
		"&iexcl;" => "".chr(194).chr(161)."",
		"&Igrave;" => "".chr(195).chr(140)."",
		"&igrave;" => "".chr(195).chr(172)."",
		"&image;" => "".chr(226).chr(132).chr(145)."",
		"&infin;" => "".chr(226).chr(136).chr(158)."",
		"&int;" => "".chr(226).chr(136).chr(171)."",
		"&Iota;" => "".chr(206).chr(153)."",
		"&iota;" => "".chr(206).chr(185)."",
		"&iquest;" => "".chr(194).chr(191)."",
		"&isin;" => "".chr(226).chr(136).chr(136)."",
		"&Iuml;" => "".chr(195).chr(143)."",
		"&iuml;" => "".chr(195).chr(175)."",
		"&Kappa;" => "".chr(206).chr(154)."",
		"&kappa;" => "".chr(206).chr(186)."",
		"&Lambda;" => "".chr(206).chr(155)."",
		"&lambda;" => "".chr(206).chr(187)."",
		"&lang;" => "".chr(226).chr(140).chr(169)."",
		"&laquo;" => "".chr(194).chr(171)."",
		"&larr;" => "".chr(226).chr(134).chr(144)."",
		"&lArr;" => "".chr(226).chr(135).chr(144)."",
		"&lceil;" => "".chr(226).chr(140).chr(136)."",
		"&ldquo;" => "".chr(226).chr(128).chr(156)."",
		"&le;" => "".chr(226).chr(137).chr(164)."",
		"&lfloor;" => "".chr(226).chr(140).chr(138)."",
		"&lowast;" => "".chr(226).chr(136).chr(151)."",
		"&loz;" => "".chr(226).chr(151).chr(138)."",
		"&lrm;" => "".chr(226).chr(128).chr(142)."",
		"&lsaquo;" => "".chr(226).chr(128).chr(185)."",
		"&lsquo;" => "".chr(226).chr(128).chr(152)."",
		"&macr;" => "".chr(194).chr(175)."",
		"&mdash;" => "".chr(226).chr(128).chr(148)."",
		"&micro;" => "".chr(194).chr(181)."",
		"&middot;" => "".chr(194).chr(183)."",
		"&minus;" => "".chr(226).chr(136).chr(146)."",
		"&Mu;" => "".chr(206).chr(156)."",
		"&mu;" => "".chr(206).chr(188)."",
		"&nabla;" => "".chr(226).chr(136).chr(135)."",
		"&nbsp;" => "".chr(194).chr(160)."",
		"&ndash;" => "".chr(226).chr(128).chr(147)."",
		"&ne;" => "".chr(226).chr(137).chr(160)."",
		"&ni;" => "".chr(226).chr(136).chr(139)."",
		"&not;" => "".chr(194).chr(172)."",
		"&notin;" => "".chr(226).chr(136).chr(137)."",
		"&nsub;" => "".chr(226).chr(138).chr(132)."",
		"&Ntilde;" => "".chr(195).chr(145)."",
		"&ntilde;" => "".chr(195).chr(177)."",
		"&Nu;" => "".chr(206).chr(157)."",
		"&nu;" => "".chr(206).chr(189)."",
		"&Oacute;" => "".chr(195).chr(147)."",
		"&oacute;" => "".chr(195).chr(179)."",
		"&Ocirc;" => "".chr(195).chr(148)."",
		"&ocirc;" => "".chr(195).chr(180)."",
		"&OElig;" => "".chr(197).chr(146)."",
		"&oelig;" => "".chr(197).chr(147)."",
		"&Ograve;" => "".chr(195).chr(146)."",
		"&ograve;" => "".chr(195).chr(178)."",
		"&oline;" => "".chr(226).chr(128).chr(190)."",
		"&Omega;" => "".chr(206).chr(169)."",
		"&omega;" => "".chr(207).chr(137)."",
		"&Omicron;" => "".chr(206).chr(159)."",
		"&omicron;" => "".chr(206).chr(191)."",
		"&oplus;" => "".chr(226).chr(138).chr(149)."",
		"&or;" => "".chr(226).chr(136).chr(168)."",
		"&ordf;" => "".chr(194).chr(170)."",
		"&ordm;" => "".chr(194).chr(186)."",
		"&Oslash;" => "".chr(195).chr(152)."",
		"&oslash;" => "".chr(195).chr(184)."",
		"&Otilde;" => "".chr(195).chr(149)."",
		"&otilde;" => "".chr(195).chr(181)."",
		"&otimes;" => "".chr(226).chr(138).chr(151)."",
		"&Ouml;" => "".chr(195).chr(150)."",
		"&ouml;" => "".chr(195).chr(182)."",
		"&para;" => "".chr(194).chr(182)."",
		"&part;" => "".chr(226).chr(136).chr(130)."",
		"&permil;" => "".chr(226).chr(128).chr(176)."",
		"&perp;" => "".chr(226).chr(138).chr(165)."",
		"&Phi;" => "".chr(206).chr(166)."",
		"&phi;" => "".chr(207).chr(134)."",
		"&Pi;" => "".chr(206).chr(160)."",
		"&pi;" => "".chr(207).chr(128)."",
		"&piv;" => "".chr(207).chr(150)."",
		"&plusmn;" => "".chr(194).chr(177)."",
		"&pound;" => "".chr(194).chr(163)."",
		"&prime;" => "".chr(226).chr(128).chr(178)."",
		"&Prime;" => "".chr(226).chr(128).chr(179)."",
		"&prod;" => "".chr(226).chr(136).chr(143)."",
		"&prop;" => "".chr(226).chr(136).chr(157)."",
		"&Psi;" => "".chr(206).chr(168)."",
		"&psi;" => "".chr(207).chr(136)."",
		"&radic;" => "".chr(226).chr(136).chr(154)."",
		"&rang;" => "".chr(226).chr(140).chr(170)."",
		"&raquo;" => "".chr(194).chr(187)."",
		"&rarr;" => "".chr(226).chr(134).chr(146)."",
		"&rArr;" => "".chr(226).chr(135).chr(146)."",
		"&rceil;" => "".chr(226).chr(140).chr(137)."",
		"&rdquo;" => "".chr(226).chr(128).chr(157)."",
		"&real;" => "".chr(226).chr(132).chr(156)."",
		"&reg;" => "".chr(194).chr(174)."",
		"&rfloor;" => "".chr(226).chr(140).chr(139)."",
		"&Rho;" => "".chr(206).chr(161)."",
		"&rho;" => "".chr(207).chr(129)."",
		"&rlm;" => "".chr(226).chr(128).chr(143)."",
		"&rsaquo;" => "".chr(226).chr(128).chr(186)."",
		"&rsquo;" => "".chr(226).chr(128).chr(153)."",
		"&sbquo;" => "".chr(226).chr(128).chr(154)."",
		"&Scaron;" => "".chr(197).chr(160)."",
		"&scaron;" => "".chr(197).chr(161)."",
		"&sdot;" => "".chr(226).chr(139).chr(133)."",
		"&sect;" => "".chr(194).chr(167)."",
		"&shy;" => "".chr(194).chr(173)."",
		"&Sigma;" => "".chr(206).chr(163)."",
		"&sigma;" => "".chr(207).chr(131)."",
		"&sigmaf;" => "".chr(207).chr(130)."",
		"&sim;" => "".chr(226).chr(136).chr(188)."",
		"&spades;" => "".chr(226).chr(153).chr(160)."",
		"&sub;" => "".chr(226).chr(138).chr(130)."",
		"&sube;" => "".chr(226).chr(138).chr(134)."",
		"&sum;" => "".chr(226).chr(136).chr(145)."",
		"&sup1;" => "".chr(194).chr(185)."",
		"&sup2;" => "".chr(194).chr(178)."",
		"&sup3;" => "".chr(194).chr(179)."",
		"&sup;" => "".chr(226).chr(138).chr(131)."",
		"&supe;" => "".chr(226).chr(138).chr(135)."",
		"&szlig;" => "".chr(195).chr(159)."",
		"&Tau;" => "".chr(206).chr(164)."",
		"&tau;" => "".chr(207).chr(132)."",
		"&there4;" => "".chr(226).chr(136).chr(180)."",
		"&Theta;" => "".chr(206).chr(152)."",
		"&theta;" => "".chr(206).chr(184)."",
		"&thetasym;" => "".chr(207).chr(145)."",
		"&thinsp;" => "".chr(226).chr(128).chr(137)."",
		"&THORN;" => "".chr(195).chr(158)."",
		"&thorn;" => "".chr(195).chr(190)."",
		"&tilde;" => "".chr(203).chr(156)."",
		"&times;" => "".chr(195).chr(151)."",
		"&trade;" => "".chr(226).chr(132).chr(162)."",
		"&Uacute;" => "".chr(195).chr(154)."",
		"&uacute;" => "".chr(195).chr(186)."",
		"&uarr;" => "".chr(226).chr(134).chr(145)."",
		"&uArr;" => "".chr(226).chr(135).chr(145)."",
		"&Ucirc;" => "".chr(195).chr(155)."",
		"&ucirc;" => "".chr(195).chr(187)."",
		"&Ugrave;" => "".chr(195).chr(153)."",
		"&ugrave;" => "".chr(195).chr(185)."",
		"&uml;" => "".chr(194).chr(168)."",
		"&upsih;" => "".chr(207).chr(146)."",
		"&Upsilon;" => "".chr(206).chr(165)."",
		"&upsilon;" => "".chr(207).chr(133)."",
		"&Uuml;" => "".chr(195).chr(156)."",
		"&uuml;" => "".chr(195).chr(188)."",
		"&weierp;" => "".chr(226).chr(132).chr(152)."",
		"&Xi;" => "".chr(206).chr(158)."",
		"&xi;" => "".chr(206).chr(190)."",
		"&Yacute;" => "".chr(195).chr(157)."",
		"&yacute;" => "".chr(195).chr(189)."",
		"&yen;" => "".chr(194).chr(165)."",
		"&yuml;" => "".chr(195).chr(191)."",
		"&Yuml;" => "".chr(197).chr(184)."",
		"&Zeta;" => "".chr(206).chr(150)."",
		"&zeta;" => "".chr(206).chr(182)."",
		"&zwj;" => "".chr(226).chr(128).chr(141)."",
		"&zwnj;" => "".chr(226).chr(128).chr(140)."",
		"&gt;" => ">",
		"&lt;" => "<"
	);
	$return_text = strtr($text_to_convert, $htmlentities_table);
	$return_text = preg_replace('~&#x([0-9a-f]+);~ei', 'code_to_utf8(hexdec("\\1"))', $return_text);
	$return_text = preg_replace('~&#([0-9]+);~e', 'code_to_utf8(\\1)', $return_text);
	return $return_text;
}

//============================================================+
// END OF FILE
//============================================================+
?>