", "/", "?"); $clean = trim(str_replace($strip, "", strip_tags($string))); $clean = preg_replace('/\s+/', "_", $clean); $clean = ($anal) ? preg_replace("/[^a-zA-Z0-9]/", "", $clean) : $clean ; if($substr){ $clean = (strlen($clean) > 33) ? substr($clean,-33) : $clean; } return ($force_lowercase) ? (function_exists('mb_strtolower')) ? mb_strtolower($clean, 'UTF-8') : strtolower($clean) : $clean; } }