MySQL server error report:Array
(
    [0] => Array
        (
            [message] => MySQL Query Error
        )

    [1] => Array
        (
            [sql] => SELECT article_id, title FROM `www_landypoollin`.`site_article` WHERE article_id > 530 AND cat_id= AND is_show=1 LIMIT 1
        )

    [2] => Array
        (
            [error] => 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 'AND is_show=1 LIMIT 1' at line 1
        )

    [3] => Array
        (
            [errno] => 1064
        )

)