让二维数组按照某键值排序的方法[PHP]

示例代码如下

        $arr = [
            [
                'name' => '小坏龙',
                'age' => 28
            ],
            [
                'name' => '小坏龙2',
                'age' => 14
            ],
            [
                'name' => '小坏龙3',
                'age' => 59
            ],
            [
                'name' => '小坏龙4',
                'age' => 23
            ],
            [
                'name' => '小坏龙5',
                'age' => 23
            ],
            [
                'name' => '小坏龙6',
                'age' => 21
            ]
        ];

        array_multisort(array_column($arr, 'age'), SORT_DESC, $arr);
        echo '<pre>';
        print_r($arr);