Wordpress "permalinks" under the hood - wordpress

this may be too general question to ask, but how does wordpress permalink work?
clearly they dont work with htacces only what it seems?!
there is that page where a "template tree" is listed
"single.php"-url is like that: "https://example.com/thisisanarticle"
"page.php"-url is like that: "https://example.com/apage"
so how does wordpress know what to call? both urls share the same structure after all.

Under the hood, WordPress uses their WP_Rewrite mechanism to create/update entries in Apache's .htaccess file whenever permalinks are added/removed/updated.
The class and its implementation in the WordPress core use a set of rules to query the WordPress database and write the rules into .htaccess each time an update is determined to be required.

Related

Only a wordpress group of user can access to a folder using .htaccess

I don't know a lot about .htaccess.
I have a web with Wordpress and I made a part private only for subscribers. I have installed a couple of Wordpress plugins to control the access to that page. The problem is that the "private" page links to a folder where I have a lot of .html pages. That is the folder I want to protect. I have used the http_refered in the .htaccess but I know it is very easy to hack it.
Is there any way to write in the .htaccess file a command that check the Wordpress user file and see if the user belongs to the "suscriber" group?
I suggest to protect the private page with password (this is common feature in Wordpress) and do not mess with the .htaccess file.
Anyhow, the is no way to tell the Apache (because the .htaccess is applied from it) that this or that user is registered or approved user. This can be done on different level - PHP and/or Wordpress logic.

Rewrite Magento url to Wordpress page

I have a Magento site installed at the root of my domain and a Wordpress installed in a subdirectory. Currently I access my sites like this:
Magento: "domain.com"
Wordpress: "domain.com/blog"
I would like to be able to use Wordpress Pages seamlessly, without the "/blog" subdirectory showing in the url, such as:
Wordpress Page-X: "domain.com/page-x"
Note that I do want to keep the "/blog" subdirectory showing normally for blog posts etc... I just don't want it for Wordpress Pages.
Could anybody help on how to set that up? I was think tweaking the .htaccess would've work, but I can't find out how. Other solutions are welcome too. Thank you.
Magento provides you with an option to create custom URL rewrites in the backend (admin) you can find it here. This way you should be able to create rewrites. Also if you want to automate the creation of rewrites you can refer to the core_rewrites table in magento's database. Also this is a good read if you want to do logic based rewrites on the fly.

Change permalink structure with htaccess - wordpress?

I want to change my old domain name to new domain. What I ask here is how to redirect permalink structure with htaccess from
http://www.OldDomain.com/postname/ to http://NewDomain.com/postid/postname/
/%postname%/ /%postid%/
Straight answer is NO, you must not do this via .htaccess.
Wordpress already supports (and enforces) this permalink structure so it is much better and cleaner to goto Wordpress admin panel and change the permalink structure to /%postid%/%postname%/ in the newer installation of Wordpress.
PS: Note that even if you rewrite these URLs differently via mod_rewrite, WP will enforce and expect this to whatever is defined in it permalink definition.

Wordpress: What are "permalinks" besides mod_rewrite rules?

I know that permalinks involve rewrite rules and they are somehow updated by Dashboard > Settings > Save changes. Sometimes this must be "refreshed" when you add plugins the create new re-write rules... but usually the .htaccess file doesn't change. So what is that button actually doing?
I know it tries to re-write the .htaccess file (if it has sufficient permissions on the server), but does it do something else? Is there a cache or database record somewhere as well?
For reference, here's the codex page for permalinks. (It only talks about .htaccess)
It also tells WordPress to write the form values to the options table for the following options:
permalink_structure
category_base
tag_base
The default permalink structures denoted by radio buttons simply have the structure pre-formatted for the user, so the Day and name option for example is simply written into the database as
/%year%/%monthnum%/%day%/%postname%/
The Default option is written into the database as an empty string to indicate not to use pretty permalinks.

How WordPress permalink system works?

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.
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.
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.

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