更新php多維數組

Question

我想基於pid和大小s更新數組，如果產品id和大小都匹配相同的數組元素，那麼它通過添加數量並將它們合併到一個索引中來更新數量。任何幫助都應該不勝感激。
我的代碼是：_

<?php 

$details = array ("0" => array ("pid" => "402", 
             "q" => "1", 
             "s" => "0" 
            ), 
        "1" => array ("pid" => "403", 
             "q" => "2", 
             "s" => "0" 
            ), 
        "2" => array ("pid" => "402", 
             "q" => "3", 
             "s" => "0" 
            ), 
        "3" => array ("pid" => "403", 
             "q" => "1", 
             "s" => "0" 
            ), 
        "4" => array ("pid" => "405", 
             "q" => "1", 
             "s" => "0" 
            ), 
       ); 

?> 

輸出應該看起來像

輸出：

0-pid 402 q 4 s 0 
1-pid 403 q 3 s 0 
4-pid 405 q 1 s 0 

Answer 1

foreach($details as $p) 
{ 
    $output[$p["pid"]][$p["s"]]["q"]+=$p["q"]; 
} 

輸出

Array 
(
    [402] => Array 
     (
      [0] => Array 
       (
        [q] => 4 
       ) 

     ) 

    [403] => Array 
     (
      [0] => Array 
       (
        [q] => 3 
       ) 

     ) 

    [405] => Array 
     (
      [0] => Array 
       (
        [q] => 1 
       ) 

     ) 

) 

然後，您可以以任何您喜歡的格式顯示陣列