php |数组合并 [英] php | Array merge

问题描述

我有一个数组:

Array
(
    [0] => Array
        (
            [qty] => 2
            [id] => 1
            [name] => Name 1
            [sku] => Model 1
            [options] => Color: <em>Black (+10$)</em>. Memory: <em>32GB (+99$)</em>. 
            [price] => 209.00
        )

    [1] => Array
        (
            [qty] => 1
            [id] => 1
            [name] => Name 1
            [sku] => Model 1
            [options] => Color: <em>Black (+10$)</em>. Memory: <em>16GB</em>. 
            [price] => 110.00
        )

    [2] => Array
        (
            [qty] => 1
            [id] => 3
            [name] => Name 2
            [sku] => Model 2
            [options] => 
            [price] => 100.00
        )
)

第一步是找到相同的ID.并且如果存在相同的ID，则转换数组. 是否有可能获得输出数组(如果id相同，则删除一个数组，然后向另一个数组添加数量)?

First step is to find the same id. And if the same id exist convert array. Is it possible to get output array (if id the same remove one and add qty to the another)?

 Array
    (
        [0] => Array
            (
                [qty] => 3 // 2+1
                [id] => 1
                [name] => Name 1
                [sku] => Model 1
                [options] => Color: <em>Black (+10$)</em>. Memory: <em>32GB (+99$)</em>. 
                [price] => 209.00
            )

        [1] => Array
            (
                [qty] => 1
                [id] => 3
                [name] => Name 2
                [sku] => Model 2
                [options] => 
                [price] => 100.00
            )
    )

谢谢！

推荐答案

$result = array();
foreach ($input as $subarray) {
  $id = $subarray['id'];
  if (isset($result[$id])) { // Same ID
    $result[$id]['qty'] += $subarray['qty']; // Add quantities
  } else {
    $result[$id] = $subarray; // New ID, put in results
  }
}
$result = array_values($result); // Convert from associative array to indexed

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