php - 组合数组但保留键？

Question

我正在尝试组合两个数组，但将它们的键保持在原位。

例如，我的 $artist_ids 数组如下:

Array
(
    [1] => Array
    (
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )
)

我有我的 $song_ids 数组:

Array
(
[0] => Array
    (
        [id] => 113064
        [title] => Harder To Breathe
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )

[2] => Array
    (
        [id] => 113065
        [title] => This Love
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )

[3] => Array
    (
        [id] => 113066
        [title] => Shiver
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )
}

现在，如果我使用 array_merge($artist_ids, $song_ids)，它看起来像是创建了一个新数组并将 $song_ids 附加到我的 $artist_ids 底部；完全无视键—— $artist_ids[1] 突然变成 [0] ，其余的跟在后面。

我可以用什么来固定 key ？我希望我的输出看起来像:

Array
(
[0] => Array
    (
        [id] => 113064
        [title] => Harder To Breathe
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )
[1] => Array
    (
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )

[2] => Array
    (
        [id] => 113065
        [title] => This Love
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )

[3] => Array
    (
        [id] => 113066
        [title] => Shiver
        [artist_id] => 12291
        [artist_name] => Maroon 5
    )
}

Answer 1

只需使用重载 +合并数组:

$new_array = $artist_ids + $song_ids;

在此处查看操作: http://codepad.viper-7.com/1bJAfH