//定义一个比较函数
功能CMP（$ A，$ B）{
    如果（$ A ['状态'] == $ B ['状态']）{
        返回0;
    }
    返回（$ A ['状态'＆LT; $ B ['状态']）？ -1：1;
}usort（$阵列，CMP）;
 

这是应该做你想要什么，你可以改变比较函数来排序任何你想要的关键。

This should be really simple, but what is the way to go on this. I want to sort an multidimensional array by a key, like this:

Array (
[0] => Array
    (
        [iid] => 1
        [invitee] => 174
        [nid] => 324343
        [showtime] => 2010-05-09 15:15:00
        [location] => 13
        [status] => 1
        [created] => 2010-05-09 15:05:00
        [updated] => 2010-05-09 16:24:00
    )

[1] => Array
    (
        [iid] => 1
        [invitee] => 220
        [nid] => 21232
        [showtime] => 2010-05-09 15:15:00
        [location] => 12
        [status] => 0
        [created] => 2010-05-10 18:11:00
        [updated] => 2010-05-10 18:11:00
    ))

Say i want to sort this by [status], how would I achieve this? Thanks in advance!

//define a comparison function
function cmp($a, $b) {
    if ($a['status'] == $b['status']) {
        return 0;
    }
    return ($a['status'] < $b['status']) ? -1 : 1;
}

usort($array, "cmp");

That should do what you want, you can alter the comparison function to sort on whatever key you want.