array_multisort 二維數組排序

* 用PHP自帶array_multisort函數排序 

```

            $data = [

                ['volume' => 67, 'edition' => 2],

                ['volume' => 86, 'edition' => 1],

                ['volume' => 85, 'edition' => 6],

                ['volume' => 98, 'edition' => 2],

                ['volume' => 86, 'edition' => 6],

                ['volume' => 67, 'edition' => 7],

            ];

        

            foreach ($data as $key => $row)

            {

                $volume[$key] = $row['volume'];

                $edition[$key] = $row['edition'];

            }

        

            array_multisort($volume,SORT_DESC,$edition,SORT_ASC,$data);

            // SORT_DESC 不可加"";

            dump($data);

            exit;

 

```

```

輸出結果：

復制代碼 代碼如下:

Array
(
    [0] => Array
        (
            [volume] => 98
            [edition] => 2
        )
    [1] => Array
        (
            [volume] => 86
            [edition] => 1
        )
    [2] => Array
        (
            [volume] => 86
            [edition] => 6
        )
    [3] => Array
        (
            [volume] => 85
            [edition] => 6
        )
    [4] => Array
        (
            [volume] => 67
            [edition] => 2
        )
    [5] => Array
        (
            [volume] => 67
            [edition] => 7
        )
)

```