更新php多维数组

Question

我想基于pid和大小s更新数组，如果产品id和大小都匹配相同的数组元素，那么它通过添加数量并将它们合并到一个索引中来更新数量。任何帮助都应该不胜感激。
我的代码是：_

<?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" 
            ), 
       ); 

?> 

输出应该看起来像

输出：

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"]; 
} 

输出

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

     ) 

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

     ) 

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

     ) 

) 

然后，您可以以任何您喜欢的格式显示阵列