Clear cache on back press to prevent going back on login page or previous page after logout

Question

this is bugging me for a week already. Well I just badly needed to clear the cache of the login page after the user successfully logged in and prevent user from viewing the

Answer 1

What about using codeigniter output class, in your controller:

$this->output->set_header("Cache-Control: no-store, no-cache, must-revalidate, no-transform, max-age=0, post-check=0, pre-check=0");
$this->output->set_header("Pragma: no-cache");