PHP - 合并两个值匹配的关联数组

Question

我有两个需要合并的数组。我可以遍历每个数组并手动合并。但是，是否有内置函数来执行此操作？

数组 1:

Array
(
[0] => Array
    (
        [detail_image_id] => 6389
        [product_name] => Starter broadband Package
    )

[1] => Array
    (
        [detail_image_id] => 6358
        [product_name] => Starter broadband Package
    )
)

数组 2:

Array
(
[0] => Array
    (
        [detail_image_id] => 6358
        [guid] => http://xxx/wp-content/uploads/2018/04/broadband-4mbs-wingle.jpg
    )

[1] => Array
    (
        [detail_image_id] => 6389
        [guid] => http://xxx/wp-content/uploads/2018/04/broadband-4mbs-charji.jpg
    )
)

预期输出数组是:

Array
(
[0] => Array
    (
        [detail_image_id] => 6389
        [product_name] => Starter broadband Package
        [guid] => http://xxx/wp-content/uploads/2018/04/broadband-4mbs-charji.jpg
    )

[1] => Array
    (
        [detail_image_id] => 6358
        [product_name] => Starter broadband Package
        [guid] => http://xxx/wp-content/uploads/2018/04/broadband-4mbs-wingle.jpg
    )
)

我只从数组中添加了一个样本。数组很大。有没有像 array_merge() 这样的 PHP 函数或 array_map()我们可以使用代替手动循环和迭代器吗？

Answer 1

更老更聪明:我从几年前就删除了我的答案，因为我不再推荐这些技术。合并数组，将它们提供给 foreach() 将是最简洁和有效的。循环，然后“联合”(+ 用作数组联合运算符)相关行中的数据。
空合并运算符( ?? )用于确保总有一些东西可以“联合”。
代码:( Demo )

$result = [];
foreach (array_merge($array1, $array2) as $row) {
    $result[$row['detail_image_id']] = ($result[$row['detail_image_id']] ?? []) + $row;
}

var_export(array_values($result));

输出:

array (
  0 => 
  array (
    'detail_image_id' => '6389',
    'product_name' => 'Starter broadband Package',
    'guid' => 'http://xxx/wp-content/uploads/2018/04/broadband-4mbs-charji.jpg',
  ),
  1 => 
  array (
    'detail_image_id' => '6358',
    'product_name' => 'Starter broadband Package',
    'guid' => 'http://xxx/wp-content/uploads/2018/04/broadband-4mbs-wingle.jpg',
  ),
)