public static function getRequestUriWithoutQueryString()
 {
     if (seo42::isSubDirInstall()) {
         // remove subdir from request uri
         $requestUri = seo42_utils::trimSubDir($_SERVER['REQUEST_URI']);
     } else {
         $requestUri = $_SERVER['REQUEST_URI'];
     }
     return ltrim(strtok($requestUri, '?'), '/');
 }