排序多維數組幫助

Question

我想通過season_number排序這個數組但我不確定使用哪個函數，因爲我假設我需要自定義排序？有任何想法嗎？

Array 
(
    [0] => Array 
     (
      [season_number] => 7 
      [show_id] => 21 
      [show_seasons_id] => 14 
     ) 

    [1] => Array 
     (
      [season_number] => 6 
      [show_id] => 21 
      [show_seasons_id] => 31 
     ) 

    [2] => Array 
     (
      [season_number] => 1 
      [show_id] => 21 
      [show_seasons_id] => 40 
     ) 

    [3] => Array 
     (
      [season_number] => 2 
      [show_id] => 21 
      [show_seasons_id] => 41 
     ) 
) 

Answer 1

您可以使用usort功能與「比較」功能：

function compare_my_elements($arr1, $arr2) { 
    $s1=$arr1["season_number"]; 
    $s2=$arr2["season_number"]; 
    if($s1 == $s2) return 0; 
    return ($s1 > $s2 ? 1 : -1); 
} 

usort($my_md_array, compare_my_elements); 

Answer 2

試試這個：

foreach ($array as $key => $val) { 
    $newArr[$key] = $val['season_number']; 
} 
array_multisort($newArr, SORT_ASC, $array); 

其中$數組是你打印出數組。