5df473c5a6746b3b01d07db4321b41933c3a8785
4 * iso-8859-1 encoding functions
6 * takes a string of unicode entities and converts it to a iso-8859-1 encoded string
7 * Unsupported characters are replaced with ?.
9 * @copyright 2004-2016 The SquirrelMail Project Team
10 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
12 * @package squirrelmail
17 * Converts string to iso-8859-1
18 * @param string $string text with numeric unicode entities
19 * @return string iso-8859-1 encoded text
21 function charset_encode_iso_8859_1 ($string) {
22 // don't run encoding function, if there is no encoded characters
23 if (! preg_match("'&#[0-9]+;'",$string) ) return $string;
25 $string=preg_replace_callback("/&#([0-9]+);/",'unicodetoiso88591',$string);
31 * Return iso-8859-1 symbol when unicode character number is provided
33 * This function is used internally by charset_encode_iso_8859_1
34 * function. It might be unavailable to other SquirrelMail functions.
35 * Don't use it or make sure, that functions/encode/iso_8859_1.php is
38 * @param array $matches array with first element a decimal unicode value
39 * @return string iso-8859-1 character
41 function unicodetoiso88591($matches) {