294二维数组按照多个字段排序

举个栗子（按第一个字段正序，第二个字段倒叙）

 $arr = [ ["f" => 1, "s" => 2], ["f" => 1, "s" => 3], ["f" => 2, "s" => 3], ];

        $first = array_column($arr, "f");
        $second = array_column($arr, "s");

        array_multisort($first, SORT_ASC, $second, SORT_DESC, $arr);
        dd($arr);

array:3 [
  0 => array:2 [
    "f" => 1
    "s" => 3
  ]
  1 => array:2 [
    "f" => 1
    "s" => 2
  ]
  2 => array:2 [
    "f" => 2
    "s" => 3
  ]
]

转自：https://learnku.com/laravel/t/60481