Error on page

FAILURE

• Query: select max(order_id) from gallery where user_id=
• Class: photo
• File: /fullsize.php
• Num: 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 '' at line 1

Success

• Query: select directory, realname, reverse from users where user_id=""
• Class: photo
• File: /fullsize.php

Success

• Query: select title,filename,description,photo_id,user_id,gallery_id,copy,order_id from photos where photo_id=0;
• Class: photo
• File: /fullsize.php