下载后facebooksdkforphp我试图运行following.代码是:functionQueryToRetrieveUserThroughID(string$id){$newFacebookApp=newFacebook\FacebookApp(app-id,app-secret);$request=newFacebook\FacebookRequest($newFacebookApp,'GET','/'.$id);$response=$request->execute();$graphObject=$request->getGraphObject();}尽管当到达$respo