MySQL Error in

Query :
SELECT count(a.prod_id) FROM r_produse AS a LEFT JOIN r_produse_poze AS b ON a.prod_id=b.prod_id WHERE a.cat_id IN (Array) AND a.prod_activ='da'

Answer :
Unknown column 'Array' in 'where clause'

Array
(
    [0] => Array
        (
            [file] => /home/rmen1901/public_html/data/functions.php
            [line] => 35
            [function] => query
            [args] => Array
                (
                    [0] => SELECT count(a.prod_id) FROM r_produse AS a LEFT JOIN r_produse_poze AS b ON a.prod_id=b.prod_id WHERE a.cat_id IN (Array) AND a.prod_activ='da' 
                )

        )

    [1] => Array
        (
            [file] => /home/rmen1901/public_html/f_categorii.php
            [line] => 59
            [function] => query1
            [args] => Array
                (
                    [0] => SELECT count(a.prod_id) FROM r_produse AS a LEFT JOIN r_produse_poze AS b ON a.prod_id=b.prod_id WHERE a.cat_id IN (Array) AND a.prod_activ='da' 
                    [1] => 2
                )

        )

    [2] => Array
        (
            [file] => /home/rmen1901/public_html/404.php
            [line] => 59
            [args] => Array
                (
                    [0] => /home/rmen1901/public_html/f_categorii.php
                )

            [function] => include
        )

)