Sorting array according to the values in PHP

Question

I have the following array

[0] => Array
    (
        [id] => 229
        [val] => 2
    )

[3] => Array
    (
        [id] => 237
        [val] => 1
    )

[4] => Array
    (
        [id] => 238
        [val] => 6
    )

I need to sort this array according to the val values in the array, and do not know how to accomplish this?

Answer 1

function cmp($a, $b)
{
    if ($a["val"] == $b["val"]) {
        return 0;
    }
    return ($a["val"] < $b["val"]) ? -1 : 1;
}

usort($yourarray, "cmp");

Read this for more information.