Standard\Controllers\UsersController::logInAsAction PHP Метод

    public function logInAsAction()
    {
        if (!ctype_digit($_POST['id'])) {
            $this->flasher->error('User ID is invalid - not a number: ' . $_POST['id']);
            $this->redirect('/users');
        }
        $logInAs = Gatekeeper::findUserById($_POST['id']);
        if ($logInAs && !$logInAs->inGroup('admin')) {
            $_SESSION['superuser'] = $this->user->username;
            $_SESSION['user'] = $logInAs->username;
            $this->flasher->success('Successfully logged in as ' . $logInAs->username);
        } else {
            $this->flasher->error('Cannot log in as user with ID ' . $_POST['id']);
        }
        $this->redirect('/');
    }