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PHP array sorting by multiple fields implementation code

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Release： 2023-04-05 22:06:01

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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);

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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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