3 * cp1251 encoding functions
5 * takes a string of unicode entities and converts it to a cp1251 encoded string
6 * Unsupported characters are replaced with ?.
9 * @copyright Copyright © 2004-2005 The SquirrelMail Project Team
10 * @package squirrelmail
15 * Converts string to cp1251
16 * @param string $string text with numeric unicode entities
17 * @return string cp1251 encoded text
19 function charset_encode_cp1251 ($string) {
20 // don't run encoding function, if there is no encoded characters
21 if (! preg_match("'&#[0-9]+;'",$string) ) return $string;
23 $string=preg_replace("/&#([0-9]+);/e","unicodetocp1251('\\1')",$string);
24 // $string=preg_replace("/&#[xX]([0-9A-F]+);/e","unicodetocp1251(hexdec('\\1'))",$string);
30 * Return cp1251 symbol when unicode character number is provided
32 * This function is used internally by charset_encode_cp1251
33 * function. It might be unavailable to other SquirrelMail functions.
34 * Don't use it or make sure, that functions/encode/cp1251.php is
37 * @param int $var decimal unicode value
38 * @return string cp1251 character
40 function unicodetocp1251($var) {
42 $cp1251chars=array('160' => "\xA0",
170 if (array_key_exists($var,$cp1251chars)) {
171 $ret=$cp1251chars[$var];