Notice: Undefined index: id in /var/www/www.searchenginebusinessnetwork.com/public_html/controllers/category.php on line 22 Notice: Undefined index: id in /var/www/www.searchenginebusinessnetwork.com/public_html/controllers/category.php on line 24 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'LIMIT 1' at line 1select count(distinct(u.user_id))as idavail from user_domains ud left join users u on ud.user_id = u.user_id where ud.category_id = LIMIT 1