循环遍历数组/对象的数组
我有类似于以下结构的内容:
Array
(
[wp_postmeta] => Array
(
[0] => stdClass Object
(
[meta_id] => 1
[post_id] => 2
[meta_key] => _wp_page_template
[meta_value] => default
)
)
[wp_comments] => Array
(
[0] => stdClass Object
(
[comment_ID] => 1
[comment_post_ID] => 1
[comment_author] => Mr WordPress
[comment_author_email] =>
[comment_author_url] => http://wordpress.org/
[comment_author_IP] =>
[comment_date] => 2011-10-20 03:06:23
[comment_date_gmt] => 2011-10-20 03:06:23
[comment_content] => Hi, this is a comment.
[comment_karma] => 0
[comment_approved] => 1
[comment_agent] =>
[comment_type] =>
[comment_parent] => 0
[user_id] => 0
)
)
)
我在这里尝试做的是迭代这些结果,以便我可以使用它们来形成查询。
假设 wp_postmeta 表中的所有数据都从数据库中删除,并且该数组包含该表被删除之前的数据。我想将保存的数据保存在数组中,并使用这些旧值重置表。
即循环遍历数组并将其插入为 sql: INSERT INTO wp_postmeta (meta_id, post_id, meta_key, meta_value) VALUES (1, 2, '_wp_page_template', 'default')
I have something similar to the following structure:
Array
(
[wp_postmeta] => Array
(
[0] => stdClass Object
(
[meta_id] => 1
[post_id] => 2
[meta_key] => _wp_page_template
[meta_value] => default
)
)
[wp_comments] => Array
(
[0] => stdClass Object
(
[comment_ID] => 1
[comment_post_ID] => 1
[comment_author] => Mr WordPress
[comment_author_email] =>
[comment_author_url] => http://wordpress.org/
[comment_author_IP] =>
[comment_date] => 2011-10-20 03:06:23
[comment_date_gmt] => 2011-10-20 03:06:23
[comment_content] => Hi, this is a comment.
[comment_karma] => 0
[comment_approved] => 1
[comment_agent] =>
[comment_type] =>
[comment_parent] => 0
[user_id] => 0
)
)
)
What I'm trying to do here is iterate over these results so I can use them to form a query.
Assume all the data within the wp_postmeta table is deleted from the database and this array contains the data of that table before it was deleted. I want to take this saved data in the array and reset the table with these old values.
I.e Looping through the array and inserting this as sql: INSERT INTO wp_postmeta (meta_id, post_id, meta_key, meta_value) VALUES (1, 2, '_wp_page_template', 'default')
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您可以迭代对象属性,就像使用数组一样,并且在
stdClass
中,一切都是公共的,所以上面的内容应该没有问题。You can iterate over object properties just like you can with an array, and in a
stdClass
everything is public, so the above should work no problem.