Conditional redirection with logout

Question

I've been asked to implement a custom redirection in WordPress. It seemed quite simple at first but I have no idea how to get it right. So much that I can't even get started with it. This is how it should go:

• The user logs in, and the database gets queried using the wp_login hook
• If a certain condition is met, the user gets logged out using wp_logout() from the wp_login hook
• This is where the problem comes in, the user should get redirected to a page dedicated to them, without breaking the normal logout function

So if the user logs out normally, they get redirected to the default page, however if the condition is met they get redirected to another page and still get logged out.

I've tried the wp_logout and wp_clear_auth_cookie hooks, but to no avail. I can't really show you any code, as I did not manage to come up with anything concrete.

edit:

 ....
 //in the login hook
 if($condition)
    wp_logout();
 ...
 add_action("wp_login","login_hook",10,2);

 //below the login hook
 function logout(){
    if($condition){
      wp_redirect(home_url("/redirectTo"));
      exit; 
     }
  }
 add_action("wp_logout","logout");

Answer 1

The wp_logout() function is pluggable. You should be able to write your own version and "overload" the Core function:

function wp_logout() {

  $lid = get_current_user_id(); 

  wp_destroy_current_session();
  wp_clear_auth_cookie();

  do_action( 'wp_logout' );
  /**
    * Fires after a user is logged-out.
    *
    * @since 1.5.0
    */
  if (2 == $lid) {
    wp_redirect(home_url("/redirectTo"));
    exit; 
  }

}

Answer 2

The action to hook off is on line 603 of pluggable.php according to the codex link.

add_action( $hook, $function_to_add, $priority, $accepted_args ); is the format you should use so it would probably look something like:

 add_action( 'wp_logout' , 'logout_page' );

 function logout_page() {
   // Work out your conditions 

     if($condition1) {
       $page = *page*; // whatever page
     } else if ($condition2) {
       $page = *page*; // whatever page
     }

   header("Location: /$page");
  }

I haven't done much with the logout hook but unless the function has already output something (which it would seem unlikely at that stage) the header should take you to the right page.