合并 2 个没有重复键的数组答案

【问题标题】：Merge 2 arrays with no duplicated keys合并 2 个没有重复键的数组
【发布时间】：2010-11-09 18:28:12
【问题描述】：

我有 2 个如下所示的数组，希望将它们合并在一起，而不是将键复制到新数组中。

$array1:

Array
(
[0] => Array
    (
        [a] => Array
            (
                [p] => Array
                    (
                        [a] => 1
                    )

            )

        [a/s] => Array
            (
                [p] => Array
                    (
                        [o] => 1
                    )

            )

        [a/p] => Array
            (
                [p] => Array
                    (
                        [w] => 1
                        [e] => 1
                        [d] => 1
                    )

            )

        [a/u] => Array
            (
                [p] => Array
                    (
                        [w] => 1
                        [e_a] => 1
                        [d_a] => 1
                    )
            )
    )
)

$array2:

Array
(
[0] => Array
    (
        [a/x] => Array
            (
                [p] => Array
                    (
                        [a] => 1
                    )

            )

        [a/s] => Array
            (
                [p] => Array
                    (
                        [o] => 1
                    )

            )

        [a/p] => Array
            (
                [p] => Array
                    (
                        [w] => 1
                        [e] => 1
                        [d] => 1
                    )

            )

        [a/u] => Array
            (
                [p] => Array
                    (
                        [w] => 1
                        [e_a] => 1
                        [d_a] => 1
                    )
            )
    )
)


$result = array_merge_recursive($array1, $array2);

$结果：

Array
(
[0] => Array
    (
        [a] => Array
            (
                [p] => Array
                    (
                        [a] => 1
                    )
            )

        [a/s] => Array
            (
                [p] => Array
                    (
                        [o] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )
                    )
            )

        [a/p] => Array
            (
                [p] => Array
                    (
                        [w] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )

                        [e] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )

                        [d] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )
                    )
            )

        [a/u] => Array
            (
                [p] => Array
                    (
                        [w] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )

                        [e_a] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )

                        [d_a] => Array
                            (
                                [0] => 1
                                [1] => 1
                            )
                    )
            )

        [a/x] => Array
            (
                [p] => Array
                    (
                        [a] => 1
                    )
            )
    )
)

我该如何让它看起来像这样？

Array
(
[0] => Array
    (
        [a] => Array
            (
                [p] => Array
                    (
                        [a] => 1
                    )

            )

        [a/s] => Array
            (
                [p] => Array
                    (
                        [o] => 1

                    )

            )

        [a/p] => Array
            (
                [p] => Array
                    (
                        [w] => 1
                        [e] => 1
                        [d] => 1
                    )

            )

        [a/u] => Array
            (
                [p] => Array
                    (
                        [w] => 1
                        [e_a] => 1
                        [d_a] => 1
                    )
            )

        [a/x] => Array
            (
                [p] => 1
            )
    )
)

我是不是走错了路，还是有什么办法可以解决这个问题？欢迎举例！

谢谢

【问题讨论】：

标签： php arrays

【解决方案1】：

function array_merge_recursive_unique($array1, $array2) {
  if (empty($array1)) return $array2; //optimize the base case

  foreach ($array2 as $key => $value) {
    if (is_array($value) && is_array(@$array1[$key])) {
      $value = array_merge_recursive_unique($array1[$key], $value);
    }
    $array1[$key] = $value;
  }
  return $array1;
}

【讨论】：

【解决方案2】：

您是否尝试过array_merge 页面中的用户自定义示例/功能？ http://php.net/manual/en/function.array-merge.php

似乎有很多例子可能符合您的要求。保留密钥（不重新编号）的一个建议是使用 + 运算符

$result = $x1 + $x2（其中 x 是数组）

【讨论】：