Edit site_url with filter

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With WordPress, calling site_url() returns the full site URL (http://www.example.com)
What I’m trying to do is adding something (add-something-here) at the end of the URL with filter.

The result I’m expecting is:
http://www.example.com/add-something-here

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Does someone know how to do that with filter?

I tried the following with no success: 

function custom_site_url($url) {
    return get_site_url('/add-something-here');
}
add_filter('site_url', 'custom_site_url');
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3 comments

  1. The problem is that you are producing a loop with this filter. The function get_site_url is exactly where the filter site_url is being called.

    You need:

    add_filter( 'site_url', 'custom_site_url' );

function custom_site_url( $url )
{
    if( is_admin() ) // you probably don't want this in admin side
        return $url;

    return $url .'/something';
}

    Bear in mind, that this may produce errors for scripts that rely on the real URL.

  2. Untested, but since it’s PHP could you just try…

    function custom_site_url($url) {
    return get_site_url() . '/add-something-here';
}
add_filter('site_url', 'custom_site_url');

  3. Untested, but this is a snippet of what I use often:

    $constant = 'add-something-here';
return '<a href="'. esc_url(site_url().'/'.$constant.'/'">'. esc_html( $name ).'</a>';

    or you might simply want to get the page ID instead and it’s much better.

     $page_id = '2014';
 return  <a href="'. get_page_link ($page_id) .'">'.esc_html__( 'pagename', 'text-domain' ).'</a>