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');
}