多维关联数组交集php [英] Multidimensional associative array intersection php

问题描述

我有两个多维数组

$array1 = Array (
   [a1] => Array  (
           [a_name] => aaaaa
           [a_value] => aaa
         )

   [b1] => Array (
           [b_name] => bbbbb
           [b_value] => bbb
       )
   [c1] => Array (
           [c_name] => ccccc
           [c_value] => ccc
       )

 )

$array2 = Array (
     [b1] => Array (
           [b_name]=> zzzzz
         )
  )

我想要$array1和$array2的键的交集.结果必须来自$array1.

I want the intersection of keys of $array1 and $array2. The result must be from $array1.

推荐答案

function recursive_array_intersect_key(array $array1, array $array2) {
    $array1 = array_intersect_key($array1, $array2);
    foreach ($array1 as $key => &$value) {
        if (is_array($value) && is_array($array2[$key])) {
            $value = recursive_array_intersect_key($value, $array2[$key]);
        }
    }
    return $array1;
}

演示此处.

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