Array
(
    [prop] => Array
        (
            [2] => Array
                (
                    [0] => 417
                    [1] => 455
                    [2] => 539
                    [3] => 551
                    [4] => 578
                    [5] => 614
                    [6] => 673
                    [7] => 690
                    [8] => 714
                    [9] => 717
                    [10] => 720
                    [11] => 736
                )

        )

)