function create_user($data, $activated = TRUE)
 {
  $data['created'] = date('Y-m-d H:i:s');
  $data['activated'] = $activated ? 1 : 0;

  if ($this->db->insert(self::TABLE, $data)) {
   $user_id = $this->db->insert_id();
   if ($activated) $this->create_profile($user_id);
   //쪽지 발송. by 웅파
   $arr = array('send_id'=>'blumine',
    'resv_id'=>$data['userid'],
    'reg_date'=>date("Y-m-d H:i:s"),
    'contents'=>'포럼회원 가입 축하합니다.<br><br>옆으로 길어서 생략
    'ip'=>'127.0.0.1'
   ) ;
   $this->db->insert('message', $arr);
   return array('user_id' => $user_id);
  }
  return NULL;
 }

if (!is_null($res = $this->ci->users->create_user($data, !$email_activation))) {
 $data['user_id'] = $res['user_id'];
 $data['password'] = $password;
 unset($data['last_ip']);
 return $data;
 }
}