怎么删除多维数组中指定元素

  [0] => Array
        (
            [v] => 1
            [fup] => 0
            [n] => 服务器
            [s] => Array
                (
                    [0] => Array
                        (
                            [v] => 2
                            [fup] => 2
                            [n] => one
                            [s] => Array
                                (
                                    [0] => Array
                                        (
                                            [v] => 3
                                            [fup] => 41
                                            [n] => one
                                        )

                                    [1] => Array
                                        (
                                            [v] => 4
                                            [fup] => 1
                                            [n] => two
                                        )

                                    [2] => Array
                                        (
                                            [v] => 5
                                            [fup] => 1