session->userdata('level') == 'admin') { redirect('/home'); } else { $this->session->unset_userdata(array('nik_admin','nik_staff','level')); redirect('/login'); } } function index() { $this->session->unset_userdata(array('nik_admin','nik_staff','level')); redirect('/login'); // print_r($this->session->userdata('level')); } } ?>