Array
(
    [0] => Array
        (
            [id_product] => 2234
        )

    [1] => Array
        (
            [id_product] => 1854
        )

    [2] => Array
        (
            [id_product] => 2662
        )

    [3] => Array
        (
            [id_product] => 2531
        )

)
llArray
(
    [0] => Array
        (
            [id_product] => 2234
        )

    [1] => Array
        (
            [id_product] => 1854
        )

    [2] => Array
        (
            [id_product] => 2662
        )

    [3] => Array
        (
            [id_product] => 2531
        )

)