[data] => Array
        (
            [BOO_item_quantity] => Array
                (
                    [0] => 1
                    [1] => 6
                )

            [BOO_item_id] => Array
                (
                    [0] => 18
                    [1] => 13
                )

            [BOO_item_price] => Array
                (
                    [0] => 3
                    [1] => 0
                )

        )

Quantity = 1 - Item_Id = 18 - Price = 3
Quantity = 6 - Item_Id = 13 - Price = 0