按子数组对多维数组排序

Question

我需要像这样对数组进行排序

     [0] => Array
            (
                [id] => 5
                [stats] => Array
                    (
                        [SessionsPlayed] => 1
                    )
            )
     [1] => Array
            (
                [id] => 88
                [stats] => Array
                    (
                        [SessionsPlayed] => 6
                    )
            )
     [2] => Array
            (
                [id] => 22
                [stats] => Array
                    (
                        [SessionsPlayed] => 9
                    )
            )

按sessionplays列降序排列，就像这样

     [2] => Array
            (
                [id] => 22
                [stats] => Array
                    (
                        [SessionsPlayed] => 9
                    )
            )
     [1] => Array
            (
                [id] => 88
                [stats] => Array
                    (
                        [SessionsPlayed] => 6
                    )
            )
     [0] => Array
            (
                [id] => 5
                [stats] => Array
                    (
                        [SessionsPlayed] => 1
                    )
            )

我试图在线查看如何解决这个问题，但我找到的所有答案只能排序一个孩子(例如id列)以下是我看过的帖子。https://stackoverflow.com/a/16788610/1319033https://stackoverflow.com/a/2699110/1319033

Answer 1

使用PHP的ussort

usort($array, function($a, $b) {
    return $b['stats']['SessionsPlayed'] - $a['stats']['SessionsPlayed'];
    // $b - $a for descending order
});