array(3) { [0]=> array(2) { ["product_id"]=> string(3) "563" ["category_id"]=> string(2) "91" } [1]=> array(2) { ["product_id"]=> string(3) "563" ["category_id"]=> string(3) "108" } [2]=> array(2) { ["product_id"]=> string(3) "563" ["category_id"]=> string(3) "109" } }