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‘);}