Array
(
    [prop] => Array
        (
            [2] => Array
                (
                    [0] => 448
                    [1] => 455
                    [2] => 528
                    [3] => 553
                    [4] => 578
                    [5] => 581
                    [6] => 671
                    [7] => 682
                    [8] => 690
                    [9] => 708
                    [10] => 714
                    [11] => 720
                )

        )

)