I fear I am going to have to write a bunch of code to get what I need, which is fine, but I want to check to see if there’s anything in-built before I embark on that journey.
I am working on a plugin and I need to get the relative path for a given permalink_structure. Currently, the permalink structure option returns /%postname%/%post_id%/. I have the post (page) id e.g. 100.
From what the permalink is set up as, I know the full relative path should be /iamapost/100. However, it seems the best I can do is the following:
get_permalink($post_id) === "https://example.com/iamapost/"; parse_url(get_permalink($post_id), PHP_URL_PATH) === "/iamapost/"; get_post_permalink($post_id) === "https://example.com/?post_type=page&p=100"; get_site_uri === "https://example.com";
Given that:
get_option('permalink_structure') === "/%postname%/%post_id%/";
Can the relative path be taken from this or any permalink structure set up on the permalink settings page – whatever that might be…
Please, please do not assume this is a duplicate, because I really have searched and no question and answer is specific to reacting to whatever the permalink structure is at the time. If such an answer exists, then cool.
Answers:
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Method 1
Is there anything built into the WordPress core to enable me to get the relative path from the “permalink structure” option
No, because it isn’t necessary, PHP provides this via parse_url. Using php -a we can launch an interactive PHP shell and test the code:
php > echo parse_url( 'http://example.com/iamapost/100', PHP_URL_PATH ); /iamapost/100 php >
If we read the PHP docs we see that it also handles query strings, etc, e.g.:
php > echo parse_url( 'http://example.com/iamapost/100?foo=bar#test', PHP_URL_PATH );
/iamapost/100
php >
Your problem is not retrieving the relative URL.
Your results do not contain the /100 because your permalinks do not contain it. Run echo get_permalink(); and it will become obvious. You are assuming that your permalinks contain the post ID. They do not.
Given that:
get_option('permalink_structure') === "/%postname%/%post_id%/";Can the relative path be taken from this or any permalink structure set up on the permalink settings page – whatever that might be…
Yes, via get_permalink() and parse_url.
I decided to spin up a local site of WP v5.6.1, and gave it the permalink structure you used:
I then fired up wp shell and ran the code and got the expected results:
<a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="addbcccadfccc3d9eddbdbdb">[email protected]</a>:/srv/www/wordpress-one/public_html$ wp shell
wp> echo parse_url(get_permalink(168), PHP_URL_PATH);
/test-2/168/
wp> echo get_option('permalink_structure');
/%postname%/%post_id%/
wp>
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