int(4)
01 01 01 12 05 05 08
01 01 01 12 02 02 04
00 13 11 06 02 04 04
03 03 11 07 02 04 04
03 07 07 07 02 09 09
03 03 03 03 02 09 09
03 03 10 10 02 09 09
float(0.00028896331787109)
Array
(
    [0] => Array
        (
            [0] => 0
            [1] => 13
        )

    [1] => Array
        (
            [0] => 5
            [1] => 12
        )

    [2] => Array
        (
            [0] => 12
            [1] => 5
        )

    [3] => Array
        (
            [0] => 13
            [1] => 0
        )

)