Sort an array multidimensional after a value of key PHP

Question

I have a array ,this one, which i what to sort after value of the key sum

Array
(
[anexus] => Array
    (
        [nr000000] => Array
            (
                [January2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] =>l
                    )

                [sum] => 0
                [February2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => ch
                    )

                [March2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => 
                    )


            )

        [nrh00789] => Array
            (
                [January2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => 
                    )

                [sum] => 0
                [February2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => ch
                    )

                [March2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => ch
                    )




            )

    )

[deluxe] => Array
    (
        [nr00078] => Array
            (
                [January2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => at
                    )

                [sum] => 21
                [February2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => at
                    )

                [March2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] =>p
                    )



            )

        [nr000800] => Array
            (
                [January2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => de
                    )

                [sum] => 71
                [February2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => de
                    )

                [March2015] => Array
                    (
                        [nTurn] => 0.0000
                        [nCalls] => 0
                        [nMin] => 0
                        [c] => de
                    )





            )

This is a part of array which I what to sort after the key sum

Answer 1

只需使用array_shift（） ，查看http://php.net并使用所需的任何函数进行排序，然后可以使用array_unshift（）将“ sum”添加回去，查看此内容 。