How to redirect a Wordpress logout to custom URL

Question

I have scoured the web for the last 45 minutes and still not found a simple description of how to send a user, logging out of WordPress, to a custom URL.

I've come across this;

add_filter( 'logout_url', 'my_logout_url' );
    function my_logout_url( $url ) {
       return 'http://yourdomain.com/?a=logout';
    }

..but it does not describe where to paste that code. And i am not using a 'members' plugin.

Surely there is just something that can be added to the Theme functions.php file or a edit to general-template.php to specify a URL? I'm not even wanting a different site domain. Just back to the login page would be fine, but I would rather be able to specify an entire custom 'link' somewhere in the code. www.example.com

How/where can I do this?

Many thanks in advance for yor help or advice

Answer 1

Basic

I know only 2 hooks when logout happen. This is logout_url and wp_logout. Usually, I use the wp_logout in the next way

function your_prefix_redirect() {
    wp_redirect('https://google.com/');
    die;
}
add_action('wp_logout', 'your_prefix_redirect', PHP_INT_MAX);

Notice, I specified priority as maximum INT, because some other code may do anything else major while logout happen

Where to place the code?

You should to try the next ways:

1. Place the code inside the function.php into your active theme
2. Create a basic plugin has the code above

I don't know about function.php, but inside the plugin the code above working well.

How to create a Wordpress basic plugin

1. Move to folder wp-content/plugins
2. Create a file your-some-prefix-logout-custom-url.php

3. Open new file and put in next:

   <?php
   /*
   Plugin Name: Custom logout URL
   Author: Your_Name
   */
   
   function your_prefix_redirect() {
       wp_redirect('https://google.com/');
       die;
   }
   add_action('wp_logout', 'your_prefix_redirect', PHP_INT_MAX);
   

Activate the new plugin in Wordpress admin panel after you done all actions above. If your plugin isn't show in the plugin list then create any folder in wp-content/plugins and move your plugin into new folder. The comment before the code block is requirement. Read the plugin handbook if you are interested in this