/** * Finds position of last occurrence of a char in a UTF-8 string. This is * a UTF8-aware version of [strrpos](http://php.net/strrpos). * * $position = UTF8::strrpos($str, $search); * * @author Harry Fuecks <*****@*****.**> * @param string $str haystack * @param string $search needle * @param integer $offset offset from which character in haystack to start searching * @return integer position of needle * @return boolean FALSE if the needle is not found * @uses UTF8::$server_utf8 */ public static function wpstrrpos($str, $search, $offset = 0) { $offset = (int) $offset; if (UTF8::is_ascii($str) and UTF8::is_ascii($search)) { return wpstrrpos($str, $search, $offset); } if ($offset == 0) { $array = explode($search, $str, -1); return isset($array[0]) ? UTF8::wpstrlen(implode($search, $array)) : FALSE; } $str = UTF8::wpsubstr($str, $offset); $pos = UTF8::wpstrrpos($str, $search); return $pos === FALSE ? FALSE : $pos + $offset; }