PHP array sorting by multiple fields implementation code

This article mainly talks about the problem of using PHP language to sort arrays by multiple fields. The code is attached, friends in need can take a look.

Title:

A two-dimensional array needs to be sorted by inventory, and then sorted by store distance.

I found such a method:

$array1 = array(
      0=>array('id'=>8,'name'=>'Apple','age'=> 18),
      1=>array('id'=>8,'name'=>'Bed','age'=>17),
      2=>array('id'=>5,'name'=>'Cos','age'=>16),
      3=>array('id'=>5,'name'=>'Cos','age'=>14)
);
function sortArrByManyField(){
  $args = func_get_args(); // 获取函数的参数的数组
  if(empty($args)){
    return null;
  }
  $arr = array_shift($args);
  if(!is_array($arr)){
    throw new Exception("第一个参数不为数组");
  }
  foreach($args as $key => $field){
    if(is_string($field)){
      $temp = array();
      foreach($arr as $index=> $val){
        $temp[$index] = $val[$field];
      }
      $args[$key] = $temp;
    }
  }
  $args[] = &$arr;//引用值
  call_user_func_array('array_multisort',$args);
  return array_pop($args);
}
$arr = sortArrByManyField($array1,'id',SORT_ASC,'name',SORT_ASC,'age',SORT_DESC);
print_r($arr);

The result is as follows:

<span style="color: #008080;"> array(4) {<br>      [0]=>array(3) {<br>            ["id"]=>int(5)<br>            ["name"]=>string(3) "Cos"<br>            ["age"]=>int(16)<br>          }<br>      [1]=>array(3) {<br>            ["id"]=>int(5)<br>            ["name"]=>string(3) "Cos"<br>            ["age"]=>int(14)<br>          }<br>      [2]=>array(3) {<br>            ["id"]=>int(8)<br>            ["name"]=>string(5) "Apple"<br>            ["age"]=>int(18)<br>          }<br>      [3]=>array(3) {<br>            ["id"]=>int(8)<br>            ["name"]=>string(3) "Bed"<br>            ["age"]=>int(17)<br>      }<br>    }</span><span style="color: #008080;"><br></span>

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