// If $data is an integer, fetches directly the result.
if (is_numeric($login)) {
$res = XDB::query("SELECT user_id FROM auth_user_md5 WHERE user_id = {?}", $login);
// If $data is an integer, fetches directly the result.
if (is_numeric($login)) {
$res = XDB::query("SELECT user_id FROM auth_user_md5 WHERE user_id = {?}", $login);