Facebook API 实时好友在线状态更新
我目前正在 Facebook 上开发一个应用程序，其中包含我的朋友列表并显示他们的在线状态。为了实现这一点，我使用了：
$fql = "SELECT uid, name, online_presence, status FROM user WHERE uid IN ( SELECT uid2 FROM friend WHERE uid1 = '".$this->user_id."')";
$active = $this->facebook->api(array(
'method' => 'fql.query',
'query' =>$fql
));
但由于我仅在打开应用程序时获取此信息（状态、在线状态），因此在重新加载应用程序之前它不会改变。
我的问题是，我如何才能实时更新我的朋友的状态更改或在线状态更改？
请帮忙。谢谢。
I'm currently developing an app in facebook which has a list of my friends and shows their online presence. To get this, I used:
$fql = "SELECT uid, name, online_presence, status FROM user WHERE uid IN ( SELECT uid2 FROM friend WHERE uid1 = '".$this->user_id."')";
$active = $this->facebook->api(array(
'method' => 'fql.query',
'query' =>$fql
));
But since I'm only getting this information (status, online presence) at the time when I open my app, it'll not change until I reload my app.
My question is, how can I get a real-time update of status-change or online-presence change by my friends?
Please help. Thanks.
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您需要定期执行该查询，或者使用 XMPP (Jabber) 连接来实时获取更新。
You would either need to do that query periodically, or use an XMPP (Jabber) connection to get updates in real-time.