Symfony2: how to log user out manually in controller?

Logout in Symfony2 is handled by so called logout handler which is just a lister that is executed when URL match pattern from security configuration, ie. if URL is let’s say /logout then this listener is executed. There are two build-in logout handlers:

1. CookieClearingLogoutHandler which simply clears all cookies.
2. SessionLogoutHandler which invalidates the session

All you have to do is the very same the last one does. You can achieve it by simply calling:

Legacy Symfony

$this->get('security.context')->setToken(null);
$this->get('request')->getSession()->invalidate();

Symfony 2.6

$this->get('security.token_storage')->setToken(null);
$this->get('request')->getSession()->invalidate();

Warning

This will only work when remember me functionality is disabled. In other case, user will be logged in back again by means of a remember me cookie with the next request.

Please consider the extended solution if you are using remember me functionality: https://stackoverflow.com/a/28828377/1056679