public function manage()
 {
     if (IS_POST) {
         if (isset($_POST['login'])) {
             // login
             $smsClient = new SmsClient();
             $stats = $smsClient->login();
             if ($stats !== null && $stats !== false && $stats == 0) {
                 $this->success('登录成功!', U('Sms/index'));
             } else {
                 echo '登录失败。错误码:' . $stats;
                 //$this->error('登录失败!'.$stats, U('Sms/index'));
             }
         } else {
             if ($_POST['logout']) {
                 // logout
                 $smsClient = new SmsClient();
                 $stats = $smsClient->logout();
                 if ($stats !== null && $stats !== false && $stats == 0) {
                     $this->success('注销成功!', U('Sms/index'));
                 } else {
                     echo '注销失败。错误码:' . $stats;
                     //$this->error('注销失败!'.$stats, U('Sms/index'));
                 }
             }
         }
     }
 }