几天来，我一直在用头撞墙，试图编写一种方法来递归地从 2 个多维数组中填充任何缺失的键和空值。
基本上，我有 2 个数组，一个是包含所有预期键的“主”多维数组，另一个是我想在缺失值不存在时填充它们。
例如：
主阵列：
Array
(
[title] =>
[blog_content] =>
[blog_files] => Array
(
[0] => Array
(
[file] => Array
(
[file_id] =>
[site_id] =>
[entry_id] =>
[field_id] =>
[channel_id] =>
[member_id] =>
[member_info] => Array
(
[0] => Array
(
[username] =>
[member_id] =>
[screen_name] =>
[email] =>
[join_date] =>
[last_visit] =>
[group_id] =>
[in_authorlist] =>
)
)
[link_field_id] =>
[filename] =>
[extension] =>
[mime] =>
[upload_service] =>
[title] =>
[url_title] =>
[filesize] =>
[md5] =>
[file_primary] =>
[file_order] =>
[date] =>
[downloads] =>
)
)
)
修改后的数组：
Array
(
[title] => Title goes here
[status] => open
[entry_date] => 1321038883
[entry_id] => 79
[blog_content] =>
[blog_files] =>
[test_file] =>
)
我要做的是获取主数组并将任何丢失的键和多维结构添加到修改后的数组中，如下所示：
Array
(
[title] => Title goes here
[status] => open
[entry_date] => 1321038883
[entry_id] => 79
[blog_content] => Here's the content
[blog_files] => Array
(
[0] => Array
(
[file] => Array
(
[file_id] =>
[site_id] =>
[entry_id] =>
[field_id] =>
[channel_id] =>
[member_id] =>
[member_info] => Array
(
[0] => Array
(
[username] =>
[member_id] =>
[screen_name] =>
[email] =>
[join_date] =>
[last_visit] =>
[group_id] =>
[in_authorlist] =>
)
)
[link_field_id] =>
[filename] =>
[extension] =>
[mime] =>
[upload_service] =>
[title] =>
[url_title] =>
[filesize] =>
[md5] =>
[file_primary] =>
[file_order] =>
[date] =>
[downloads] =>
)
)
)
我尝试了一些令人讨厌的头部爆炸递归（我现在头疼），内置了诸如 array_merge 之类的函数（不适用于数字键），但没有什么能让事情正常进行。
但是要记住的一件事是，有时修改后的数组有时会具有主数组的结构或结构的一部分，其值因此将主数组附加到修改后的数组将覆盖任何现有值。
任何帮助/建议将不胜感激。