PHP two-dimensional array sorting array_multisort

array_multisort(array1,sorting order, sorting type,array2,array3..） 是对多个数组或多维数组进行排序的函数。

<?php 
   
    function my_sort($arrays,$sort_key,$sort_order=SORT_ASC,$sort_type=SORT_NUMERIC ){  
        if(is_array($arrays)){  
            foreach ($arrays as $array){  
                if(is_array($array)){  
                    $key_arrays[] = $array[$sort_key];  
                }else{  
                    return false;  
                }  
            }  
        }else{  
            return false;  
        } 
        array_multisort($key_arrays,$sort_order,$sort_type,$arrays);  
        return $arrays;  
    } 
   
    $person =  array( 
                    array(&#39;id&#39;=>1,&#39;name&#39;=>&#39;fj&#39;,&#39;weight&#39;=>100,&#39;height&#39;=>180), 
                    array(&#39;id&#39;=>2,&#39;name&#39;=>&#39;tom&#39;,&#39;weight&#39;=>53,&#39;height&#39;=>150), 
                    array(&#39;id&#39;=>3,&#39;name&#39;=>&#39;jerry&#39;,&#39;weight&#39;=>120,&#39;height&#39;=>156), 
                    array(&#39;id&#39;=>4,&#39;name&#39;=>&#39;bill&#39;,&#39;weight&#39;=>110,&#39;height&#39;=>190), 
                    array(&#39;id&#39;=>5,&#39;name&#39;=>&#39;linken&#39;,&#39;weight&#39;=>80,&#39;height&#39;=>200), 
                    array(&#39;id&#39;=>6,&#39;name&#39;=>&#39;madana&#39;,&#39;weight&#39;=>95,&#39;height&#39;=>110), 
                    array(&#39;id&#39;=>7,&#39;name&#39;=>&#39;jordan&#39;,&#39;weight&#39;=>70,&#39;height&#39;=>170) 
                ); 
       
    var_dump($person); 
       
    $person = my_sort($person,&#39;name&#39;,SORT_ASC,SORT_STRING); 
   
    var_dump($person); 
       
    $person = my_sort($person,&#39;weight&#39;); 
   
    var_dump($person); 
?>

array (size=7)
  0 =>
    array (size=4)
      'id' => int 1
      'name' => string 'fj' (length=2)
      'weight' => int 100
      'height' => int 180
  1 =>
    array (size=4)
      'id' => int 2
      'name' => string 'tom' (length=3)
      'weight' => int 53
      'height' => int 150
  2 =>
    array (size=4)
      'id' => int 3
      'name' => string 'jerry' (length=5)
      'weight' => int 120
      'height' => int 156
  3 =>
    array (size=4)
      'id' => int 4
      'name' => string 'bill' (length=4)
      'weight' => int 110
      'height' => int 190
  4 =>
    array (size=4)
      'id' => int 5
      'name' => string 'linken' (length=6)
      'weight' => int 80
      'height' => int 200
  5 =>
    array (size=4)
      'id' => int 6
      'name' => string 'madana' (length=6)
      'weight' => int 95
      'height' => int 110
  6 =>
    array (size=4)
      'id' => int 7
      'name' => string 'jordan' (length=6)
      'weight' => int 70
      'height' => int 170
array (size=7)
  0 =>
    array (size=4)
      'id' => int 4
      'name' => string 'bill' (length=4)
      'weight' => int 110
      'height' => int 190
  1 =>
    array (size=4)
      'id' => int 1
      'name' => string 'fj' (length=2)
      'weight' => int 100
      'height' => int 180
  2 =>
    array (size=4)
      'id' => int 3
      'name' => string 'jerry' (length=5)
      'weight' => int 120
      'height' => int 156
  3 =>
    array (size=4)
      'id' => int 7
      'name' => string 'jordan' (length=6)
      'weight' => int 70
      'height' => int 170
  4 =>
    array (size=4)
      'id' => int 5
      'name' => string 'linken' (length=6)
      'weight' => int 80
      'height' => int 200
  5 =>
    array (size=4)
      'id' => int 6
      'name' => string 'madana' (length=6)
      'weight' => int 95
      'height' => int 110
  6 =>
    array (size=4)
      'id' => int 2
      'name' => string 'tom' (length=3)
      'weight' => int 53
      'height' => int 150
array (size=7)
  0 =>
    array (size=4)
      'id' => int 2
      'name' => string 'tom' (length=3)
      'weight' => int 53
      'height' => int 150
  1 =>
    array (size=4)
      'id' => int 7
      'name' => string 'jordan' (length=6)
      'weight' => int 70
      'height' => int 170
  2 =>
    array (size=4)
      'id' => int 5
      'name' => string 'linken' (length=6)
      'weight' => int 80
      'height' => int 200
  3 =>
    array (size=4)
      'id' => int 6
      'name' => string 'madana' (length=6)
      'weight' => int 95
      'height' => int 110
  4 =>
    array (size=4)
      'id' => int 1
      'name' => string 'fj' (length=2)
      'weight' => int 100
      'height' => int 180
  5 =>
    array (size=4)
      'id' => int 4
      'name' => string 'bill' (length=4)
      'weight' => int 110
      'height' => int 190
  6 =>
    array (size=4)
      'id' => int 3
      'name' => string 'jerry' (length=5)
      'weight' => int 120
      'height' => int 156