Laravel 5合并两个多维数组

$array1 = [
    'users' => [
        ['id' => 1, 'name' => 'Alice'],
        ['id' => 2, 'name' => 'Bob']
    ],
    'settings' => ['theme' => 'dark']
];

$array2 = [
    'users' => [
        ['id' => 3, 'name' => 'Charlie'],
        ['id' => 4, 'name' => 'David']
    ],
    'settings' => ['notifications' => true]
];

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

print_r($mergedArray);

Array
(
    [users] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [name] => Alice
                )

            [1] => Array
                (
                    [id] => 2
                    [name] => Bob
                )

            [2] => Array
                (
                    [id] => 3
                    [name] => Charlie
                )

            [3] => Array
                (
                    [id] => 4
                    [name] => David
                )

        )

    [settings] => Array
        (
            [theme] => dark
            [notifications] => 1
        )

)

function custom_merge($array1, $array2) {
    $result = $array1;
    foreach ($array2 as $key => $value) {
        if (isset($result[$key]) && is_array($result[$key]) && is_array($value)) {
            $result[$key] = custom_merge($result[$key], $value);
        } else {
            $result[$key] = $value;
        }
    }
    return $result;
}

$customMergedArray = custom_merge($array1, $array2);
print_r($customMergedArray);