PHP根据键将多个关联数组添加到新数组 [英] PHP Adding multiple associative arrays to new array based on key

问题描述

我需要基于该键合并一些关联数组。
这样：

I have a few associative arrays that I need to merge together based on there key. so:

array1:
 [person1] => tony 
 [person2] => sandra 

array2:
 [person1] => london
 [person2] => paris        

需要是：

 array 3
  [person1] => tony , london
  [person2] => sandra , paris

我遇到的问题是密钥可以是任何值，所以它可以是 person1，也可以是 hairyOtter，并且数组的大小可变。

The issue I'm having though is that the key could be any value , so it could be 'person1' or it could be 'hairyOtter' and the array is of varaible size.

推荐答案

假设每个对象都不是多维的

Assuming, that every is not multi-dimensional

$merged = array_merge_recursive($array1, $array2);
foreach ($merged as &$entry) {
  if (is_array($entry)) {
    $entry = implode(', ', $entry);
  }
}

想法是， array_merge_recursive（）如果找到具有相同键的两个值，则创建一个新数组。其他一切保持不变。

The idea is, that array_merge_recursive() creates a new array, if it find two values with the same key. Everything else stays untouched.

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