Get Permalink without domain (i.e. get relative permalink)

This is the code I am using:

<?php echo str_replace( home_url(), '', get_permalink($post->ID) ); ?>

What it does is output the permalink as a relative URL i.e. only the slug. For instance, if the permalink is http://example.com/2012/01/post-title/, the relative URL output by the code would look like /2012/01/post-title/.

Problem: All Posts and Pages show the right permalink, which is great. But all other pages (including Home, Search and Archives) show the relative URL of the first post and not that of the respective pages. Any idea why? What am I doing wrong here?

Reference: Get page permalink without wpurl

EDIT: Here’s what else I’ve tried:

In functions.php

function get_relative_permalink( $url ) {
    $url = get_permalink();
    return str_replace( home_url(), "", $url );
}

In header.php

<link rel="alternate" hreflang="en-IN" href="http://in.example.com/<?php echo get_relative_permalink(); ?>" rel="nofollow noreferrer noopener" />

Same problem with this as well. But this one shows a not-so-informative error too.

Answers:

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Method 1

Use $_SERVER['REQUEST_URI'] instead of get_permalink() to grab the current URL. get_permalink will give you the full address of the current post, not the address of the URL visited.

e.g. for example.com/test/page echo $_SERVER['REQUEST_URI']; prints /test/page

Note that this doesn’t include the hashtag, as that part never gets sent to the server, and it also doesn’t include ?foo=bar type parameters, those are in the $_GET array.

Method 2

I use

str_replace(home_url(), '', get_permalink());

If site root is not /

Method 3

This works for me:

function force_relative_url ($url)
{
    return preg_replace ('/^(http)?s?:?//[^/]*(/?.*)$/i', '$2', '' . $url);
}

To use it on a permalink:

$relative_permalink = force_relative_url (get_permalink ($post->ID));

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0