Array
(
    [0] => Array
        (
            [id_product] => 1708
        )

    [1] => Array
        (
            [id_product] => 3488
        )

    [2] => Array
        (
            [id_product] => 2451
        )

    [3] => Array
        (
            [id_product] => 1919
        )

)
llArray
(
    [0] => Array
        (
            [id_product] => 1708
        )

    [1] => Array
        (
            [id_product] => 3488
        )

    [2] => Array
        (
            [id_product] => 2451
        )

    [3] => Array
        (
            [id_product] => 1919
        )

)