在PHP中更改数组键值

我有一个像下面的数组,

[test] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 5
            [3] => 13
            [4] => 32
            [5] => 51
        )

我需要将此数组更改为如下所示,

[test] => Array
            (
                [2] => 1
                [4] => 3
                [6] => 5
                [8] => 13
                [10] => 32
                [12] => 51
            )

我需要更改键值.我怎样才能做到这一点？.

解决方法:

$newArray = array_combine(
    range(2,count($originalArray)*2,2),
    array_values($originalArray)
);