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<?php
/**
* iso-8859-7 encoding functions
*
* takes a string of unicode entities and converts it to a iso-8859-7 encoded string
* Unsupported characters are replaced with ?.
*
* @copyright 2004-2012 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: iso_8859_7.php 14248 2012-01-02 00:18:17Z pdontthink $
* @package squirrelmail
* @subpackage encode
*/
/**
* Converts string to iso-8859-7
* @param string $string text with numeric unicode entities
* @return string iso-8859-7 encoded text
*/
function charset_encode_iso_8859_7 ($string) {
// don't run encoding function, if there is no encoded characters
if (! preg_match("'&#[0-9]+;'",$string) ) return $string;
$string=preg_replace("/&#([0-9]+);/e","unicodetoiso88597('\\1')",$string);
// $string=preg_replace("/&#[xX]([0-9A-F]+);/e","unicodetoiso88597(hexdec('\\1'))",$string);
return $string;
}
/**
* Return iso-8859-7 symbol when unicode character number is provided
*
* This function is used internally by charset_encode_iso_8859_7
* function. It might be unavailable to other SquirrelMail functions.
* Don't use it or make sure, that functions/encode/iso_8859_7.php is
* included.
*
* @param int $var decimal unicode value
* @return string iso-8859-7 character
*/
function unicodetoiso88597($var) {
$iso88597chars=array('160' => "\xA0",
'163' => "\xA3",
'166' => "\xA6",
'167' => "\xA7",
'168' => "\xA8",
'169' => "\xA9",
'171' => "\xAB",
'172' => "\xAC",
'173' => "\xAD",
'176' => "\xB0",
'177' => "\xB1",
'178' => "\xB2",
'179' => "\xB3",
'183' => "\xB7",
'187' => "\xBB",
'189' => "\xBD",
'900' => "\xB4",
'901' => "\xB5",
'902' => "\xB6",
'904' => "\xB8",
'905' => "\xB9",
'906' => "\xBA",
'908' => "\xBC",
'910' => "\xBE",
'911' => "\xBF",
'912' => "\xC0",
'913' => "\xC1",
'914' => "\xC2",
'915' => "\xC3",
'916' => "\xC4",
'917' => "\xC5",
'918' => "\xC6",
'919' => "\xC7",
'920' => "\xC8",
'921' => "\xC9",
'922' => "\xCA",
'923' => "\xCB",
'924' => "\xCC",
'925' => "\xCD",
'926' => "\xCE",
'927' => "\xCF",
'928' => "\xD0",
'929' => "\xD1",
'931' => "\xD3",
'932' => "\xD4",
'933' => "\xD5",
'934' => "\xD6",
'935' => "\xD7",
'936' => "\xD8",
'937' => "\xD9",
'938' => "\xDA",
'939' => "\xDB",
'940' => "\xDC",
'941' => "\xDD",
'942' => "\xDE",
'943' => "\xDF",
'944' => "\xE0",
'945' => "\xE1",
'946' => "\xE2",
'947' => "\xE3",
'948' => "\xE4",
'949' => "\xE5",
'950' => "\xE6",
'951' => "\xE7",
'952' => "\xE8",
'953' => "\xE9",
'954' => "\xEA",
'955' => "\xEB",
'956' => "\xEC",
'957' => "\xED",
'958' => "\xEE",
'959' => "\xEF",
'960' => "\xF0",
'961' => "\xF1",
'962' => "\xF2",
'963' => "\xF3",
'964' => "\xF4",
'965' => "\xF5",
'966' => "\xF6",
'967' => "\xF7",
'968' => "\xF8",
'969' => "\xF9",
'970' => "\xFA",
'971' => "\xFB",
'972' => "\xFC",
'973' => "\xFD",
'974' => "\xFE",
'8213' => "\xAF",
'8216' => "\xA1",
'8217' => "\xA2");
if (array_key_exists($var,$iso88597chars)) {
$ret=$iso88597chars[$var];
} else {
$ret='?';
}
return $ret;
}
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