SELECT * FROM eurolls_treatments WHERE cat =  AND (url_it='welded-tube' OR url_en='welded-tube') ORDER BY id ASC<br>
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AND (url_it='welded-tube' OR url_en='welded-tube') ORDER BY id ASC' at line 1