php--yii2框架错误提示

if($code!=200){
 $user=new UserAuth();
 $user->mobile=$register['mobile'];
 $user->password=md5($register['password']);
 $user->username=$register['username'];
 $authKey=$this->getRandChar(5);
 $user->authKey=$authKey;
 $user->accessToken=md5($authKey);
　　　　//yii2 错误提示
 if (!$user->hasErrors() && $user->save()) {
 JsonLib::show(1105,'用户注册成功');
 } else {
 print_r($user->getErrors());//打印错误
 exit();
 }
}else{
 JsonLib::show(1204,'验证码不正确');
}