Array
(
    [prop] => Array
        (
            [2] => Array
                (
                    [0] => 326
                    [1] => 404
                    [2] => 449
                    [3] => 450
                    [4] => 516
                    [5] => 527
                    [6] => 551
                    [7] => 661
                    [8] => 700
                    [9] => 714
                    [10] => 730
                    [11] => 738
                )

        )

)