已登录的Facebook PHP SDK v4重定向 [英] Facebook PHP SDK v4 Redirect when already logged

问题描述

当用户已经登录时，是否可以获取会话?

Is there a way to get the session when the user is already logged in?

我只能做

$session = $this->facebook->getSessionFromRedirect();

但我不希望用户再次单击登录链接.

but I don't want the user to click the login link again.

相反，当用户已经登录时，我只想重定向并获取要使用的会话

Instead, when the user is already logged I just want to redirect and get the session to use

 $request = new Facebook\FacebookRequest($session, 'GET', 'url');

我已经尝试过了

 $session = new FacebookSession($_SESSION['FBRLH_state']);

但出现错误

  Invalid OAuth access token.

推荐答案

您需要做的是将用户的access_token保存到会话或cookie中(例如，在fb_token下).然后，通过检查是否设置了$ _SESSION ['fb_token']来查看cookie/会话是否存在.

What you need to do is save the user's access_token to the session or cookie (e.g. under fb_token). Then, you can see if the cookie / session exists by checking if $_SESSION['fb_token'] is set.

if ( isset( $_SESSION['fb_token'] ) ) {
  $session = new FacebookSession( $_SESSION['fb_token'] );
}

会话将根据您的设置而终止，因此使用$ _COOKIE可能会更好.

The session will expire depending on your settings, so using $_COOKIE might be better.

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