$loginSuccess = $this->login_model->doLogin($username, $password);
if($loginSuccess) {
$this->login_model->initialize(); // this will set value in private variable
$serializelogin = serialize($this->login_model);
$this->session->set_userdata('userprofile', $serializelogin);
}
//Destroy old session
$this->session->sess_destroy();
//Create a fresh, brand new session
$this->session->sess_create();
//Set session data
$this->session->set_userdata($row);