多維數組排序？

Question

我正面臨與陣列排序有關的問題。我想根據這些點來排序這個數組。請幫幫我，感謝名單提前

Array 
(
[5] => Array 
    (
     [0] => Array 
      (
       [feedbacks] => Array 
        (
         [emp_name] => test test 
        ) 

       [0] => Array 
        (
         [point] => 19 
        ) 
      ) 
    ) 

[9] => Array 
    (
     [0] => Array 
      (
       [feedbacks] => Array 
        (
         [emp_name] => a 
        ) 

       [0] => Array 
        (
         [point] => 5 
        ) 
      ) 
    ) 

[8] => Array 
    (
     [0] => Array 
      (
       [feedbacks] => Array 
        (
         [emp_name] => b 
        ) 

       [0] => Array 
        (
         [point] => 23 
        ) 
      ) 
    ) 

[4] => Array 
    (
     [0] => Array 
      (
       [feedbacks] => Array 
        (
         [emp_name] => c 

       [0] => Array 
        (
         [point] => -1 
        ) 
      ) 
    ) 

）

Answer 1

試試這個：

<?php 

$arr='Your array'; 


$sort = array(); 
foreach($arr as $k=>$v) { 
    $sort['point'][$k] = $v[0][0]['point']; // $v[0][0] is your point for each array 
} 

array_multisort($sort['point'], SORT_DESC, $arr); 
///array_multisort($sort['point'], SORT_ASC, $arr); // for ascending order 

echo "<pre>"; 
print_r($arr); 

?>