Inheritance: extends yii\base\Model
 public function actionSendMsg()
 {
     $model = new ChangeMobileSendRequestForm();
     Yii::$app->response->format = Response::FORMAT_JSON;
     $model->mobile = Yii::$app->request->post('mobile');
     $message = '';
     if ($model->sendMsg()) {
         return ['status' => 'ok'];
     } else {
         $message = $model->getFirstError('mobile') or $message = '验证码发送失败,请稍后再试!';
     }
     return ['status' => 'err', 'message' => $message];
 }
 /**
  * 发送短信
  * 
  * @return array
  */
 public function actionSendMsg()
 {
     $model = new ChangeMobileSendRequestForm();
     $model->mobile = Yii::$app->session['mobileChange'];
     if ($model->sendMsg()) {
         return ['status' => 'success', 'data' => []];
     } else {
         return ['status' => 'fail', 'data' => ['errors' => $model->getErrors('mobile') ?: [Yii::$app->smser->message]]];
     }
 }