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File: strspn.php
<?php /** * @version $Id: strspn.php 10381 2008-06-01 03:35:53Z pasamio $ * @package utf8 * @subpackage strings */ //--------------------------------------------------------------- /** * UTF-8 aware alternative to strspn * Find length of initial segment matching mask * Note: requires utf8_strlen and utf8_substr (if start, length are used) * @param string * @return int * @see http://www.php.net/strspn * @package utf8 * @subpackage strings */ function utf8_strspn($str, $mask, $start = NULL, $length = NULL) { $mask = preg_replace('!([\\\\\\-\\]\\[/^])!','\\\${1}',$mask); if ( $start !== NULL || $length !== NULL ) { $str = utf8_substr($str, $start, $length); } preg_match('/^['.$mask.']+/u',$str, $matches); if ( isset($matches[0]) ) { return utf8_strlen($matches[0]); } return 0; }