Admin_AuthController::logoutAction PHP Method

    public function logoutAction()
    {
        $translator = \Zend_Registry::get('container')->getService('translator');
        $auth = Zend_Auth::getInstance();
        if ($auth->hasIdentity()) {
            Article::UnlockByUser((int) $auth->getIdentity());
            $auth->clearIdentity();
            setcookie('NO_CACHE', 'NO', time() - 3600, '/');
            unset($_SESSION['statDisplayed']);
        }
        $this->_helper->FlashMessenger($translator->trans('You were logged out.', array(), 'users'));
        $this->_helper->redirector('index', 'index');
    }