按值排序多维数组并保存

Question

如何根据＆＃34; season＆＃34;的值对这个数组进行排序？首先是领域，然后是＆＃34;系列＆＃34;领域？并保存密钥

        Array
        (
            [2] => Array
                (
                    [0] => Array
                        (
                            [season] => 2
                            [series] => 3
                            [title] => Boom
                        )

                    [1] => Array
                        (
                            [season] => 2
                            [series] => 1
                            [title] => Boom
                        )

                    [2] => Array
                        (
                            [season] => 2
                            [series] => 2
                            [title] => Boom
                        )

                )

            [1] => Array
                (
                    [0] => Array
                        (
                            [season] => 1
                            [series] => 1
                            [title] => Boom
                        )

                    [1] => Array
                        (
                            [season] => 1
                            [series] => 3
                            [title] => Boom
                        )

                    [2] => Array
                        (
                            [season] => 1
                            [series] => 2
                            [title] => Boom
                        )

                )
        )
    )

usort，ksort函数不保存键，但按季节和系列值排序确实很好

在usort功能之后：

        Array
        (
            [0] => Array
                (
                    [0] => Array
                        (
                            [season] => 1
                            [series] => 1
                            [title] => Boom
                        )

                    [1] => Array
                        (
                            [season] => 1
                            [series] => 2
                            [title] => Boom
                        )

                    [2] => Array
                        (
                            [season] => 1
                            [series] => 3
                            [title] => Boom
                        )

                )

            [1] => Array
                (
                    [0] => Array
                        (
                            [season] => 2
                            [series] => 1
                            [title] => Boom
                        )

                    [1] => Array
                        (
                            [season] => 2
                            [series] => 2
                            [title] => Boom
                        )

                    [2] => Array
                        (
                            [season] => 2
                            [series] => 3
                            [title] => Boom
                        )

                )
        )

谁能帮我解决这个问题？

Answer 1

由array_walk解决

array_walk($arr, function($a, $b){
        return $a['season'] - $b['season'];
    });