Looping Session

//checking data via model
            $checking = $this->ClassModel->NamaFunction();
            //jika data ditemukan, maka create session
            if ($checking != FALSE) {
                foreach ($checking as $user) {
                        $session_data = array(
                        'inisialvariabel1'          => $user->column1,
                        'inisialvariabel2'        => $user->column2,
                        'inisialvariabel3'       => $user->column3,
                        'inisialvariabel4'        => $user->column4,
                        'inisialvariabel-n'        => $user->column-n
                        );
                        $this->CI->session->set_userdata($session_data);
                        }
            } else {
                 return "Data Kosong";
            }