如何获得具有不同键但在php中具有相同值的两个多维数组的差异？

您的问题来自您在else条件中放入的逻辑：

...
} else if( !array_key_exists($key,$array2) || $array2[$key] !== $value ) {
...

现在，您要做的是，第二次调用该方法，并传递“ ma”数组，然后开始迭代值“ part1”和“ part2”，如果第一个值是“ part1”，则进入其他方法“您需要满足条件$ array2 [$ key]！== $ value，因为在$ array2 [$ key]（$ array2 [0]）中，值是“ part2”，而在第一次迭代中，$ value是“ part1”，所以您可以将此值分配给$ difference []。到目前为止一切顺利，但是在第二次迭代中，值实际上是“ part2”，您实际上满足了此条件-！array_key_exists（$ key，$ array2），因为您的$ array2没有键1，所以您将其添加到$ difference [ ]此结果也可以...您可以做什么：

// now i've added 3rd argument to the function called recursiveCount 
// by default is false so this count happens only if you pass true as 3rd arg
function array_diff_assoc_recursive($a, $b, $recursiveCount = false) {
        // by default we set $array1 to be $a and $array2 to be $b 
        $array1 = $a;
        $array2 = $b;
       // but if we "put the count flag" and if the first array we pass
       // is smaller that the 2nd we will reverse it
       // so you don't have to worry about if the 1st array you pass in the function is smaller than the 2nd
    if ($recursiveCount && (count($array1, COUNT_RECURSIVE) < count($array2, COUNT_RECURSIVE))) {
        $array1 = $b;
        $array2 = $a;
    }

        $difference = [];
        foreach ($array1 as $key => $value) {
            if (is_array($value)) {
                if (!isset($array2[$key]) || !is_array($array2[$key])) {
                    $difference[$key] = $value;
                } else {

                    // now note that now when we call the function here we dont pass the 3rd argument, to count our arrays
                    $newDiff = $this->array_diff_assoc_recursive($value, $array2[$key]);
                    if (!empty($newDiff)) {
                        $difference[$key] = $newDiff;
                    }
                }
            } else {
                // also 1 small change here just in case arr2 is not an array actually
                if (is_array($array2) && !in_array($value, $array2)) {
                    $difference[] = $value;
                } elseif (!is_array($array2) && $value != $array2) {
                    $difference[] = $value;
                }
            }
        }

        return $difference;
    }

现在，如何在第三个参数中使用它：

    $aa = [
        "ma" => [
            "mdesktopapps" => ["part1","part2","part3","part4","part5"]
        ]
    ];

    $ab = [
        "ma" => [
            "mdesktopapps" => ["part2","part5","part4"]
        ]
    ];

    // note we pass true as 3rd arg, so we will count our multidimensional arrays
   // and because $ab < $aa they will be switched in out function
    $t = $this->array_diff_assoc_recursive($ab, $aa, true);

    var_dump($t);

结果：

array(1) {
  'ma' =>
  array(1) {
    'mdesktopapps' =>
    array(2) {
      [0] =>
      string(5) "part1"
      [1] =>
      string(5) "part3"
    }
  }
}

就是这样，从这里您可以使用它并对其进行更多升级...