问题
I am a php developer and i am currently developing a CMS/blog system. i want to add a permalink system like WordPress. i am curious about how WordPress parse permalink. For example, how to get data like id and post name from:
example.com/id/123/post/example/
In short, I want a system to get id and post name from the url. I want to enable users to change the permalink structure like WordPress using tags like:
id/%postid%/post/%postname%/
How do I get data in variables like $id and $post_name where values will 123 and example? Please help me.
Thanks in advance.
回答1:
The commonly available apache module mod_rewrite can help you out with this. What you do is write rewrite rules inside an .htaccess file, and through the rewrite, fancy structures that would have normally resembled a file system get sent to a PHP file as $_GET parameters.
For example, if you wanted to replace something like: ?reactor=13 into /reactor/13/
Write this rewrite rule in the .htaccess file:
RewriteEngine on
RewriteRule reactor/([0-9]+)/$ index.php?id=$1
Now, if instead of index.php you pull up /reactor/13/, your index.php file should see this in $_GET:
Array
(
[id] => 13
)
Now, for your HTML code, it's up to you to craft URLs and obey your thought-out structure.
These rewrite rules can be confusing, but they follow a logical regex pattern.
WordPress takes a stronger approach than inserting these editing .htaccess files, to where they send everything to WP, and then WP solves / routes the rest through internal rules.
回答2:
This depends on what server software you're using, but if your planning on using your scripts on Apache it, usually, involves using something called mod_rewrite and specifically a .htaccess file.
I would recommend starting by reading a tutorial on this subject. As usual, Google is your friend.
来源：https://stackoverflow.com/questions/11314358/how-wordpress-permalink-system-works