array(3) { [0]=> array(3) { ["product_id"]=> string(3) "110" ["category_id"]=> string(3) "113" ["main_category"]=> string(1) "0" } [1]=> array(3) { ["product_id"]=> string(3) "110" ["category_id"]=> string(3) "123" ["main_category"]=> string(1) "1" } [2]=> array(3) { ["product_id"]=> string(3) "110" ["category_id"]=> string(3) "144" ["main_category"]=> string(1) "0" } }