在使用php sdk登录facebook时遇到catch（FacebookApiException$e）问题

我使用PHPSDK的facebook登录代码不起作用。当我点击index.php中的登录按钮时，它会打开一个弹出窗口，我在其中输入电子邮件和密码，然后它会将我带回index.php，并在url中附加一些代码，如下所示：

http://localhost/test.php?code=AQAr4gedKEz01BGIGpIB5Ijh66bk9j7qhW9...etc

protected function getAccessTokenFromCode($code, $redirect_uri = null) {
    .
    .
    .
    try {
      // need to circumvent json_decode by calling _oauthRequest
      // directly, since response isn't JSON format.
      $access_token_response =
        $this->_oauthRequest(
          $this->getUrl('graph', '/oauth/access_token'),
          $params = array('client_id' => $this->getAppId(),
                          'client_secret' => $this->getAppSecret(),
                          'redirect_uri' => $redirect_uri,
                          'code' => $code));
    } catch (FacebookApiException $e) { 
      // most likely that user very recently revoked authorization.
      // In any event, we don't have an access token, so say so.
      return false;
    }
    .
    .
    .
}

catch (FacebookApiException $e) { 
      // most likely that user very recently revoked authorization.
      // In any event, we don't have an access token, so say so.
      print_r($e);
      return false;
}

另外，$user甚至在尝试登录后仍返回0。我在base_facebook.php中进行了一些挖掘，发现了这个。有一个函数使用url中的代码获取访问令牌。它位于base_facebook.php的第752行。该函数如下所示：

http://localhost/test.php?code=AQAr4gedKEz01BGIGpIB5Ijh66bk9j7qhW9...etc

protected function getAccessTokenFromCode($code, $redirect_uri = null) {
    .
    .
    .
    try {
      // need to circumvent json_decode by calling _oauthRequest
      // directly, since response isn't JSON format.
      $access_token_response =
        $this->_oauthRequest(
          $this->getUrl('graph', '/oauth/access_token'),
          $params = array('client_id' => $this->getAppId(),
                          'client_secret' => $this->getAppSecret(),
                          'redirect_uri' => $redirect_uri,
                          'code' => $code));
    } catch (FacebookApiException $e) { 
      // most likely that user very recently revoked authorization.
      // In any event, we don't have an access token, so say so.
      return false;
    }
    .
    .
    .
}

catch (FacebookApiException $e) { 
      // most likely that user very recently revoked authorization.
      // In any event, we don't have an access token, so say so.
      print_r($e);
      return false;
}

这里，catch（FacebookApiException$e）下的代码正在执行，因此函数返回false。因此没有访问令牌，因此我想我无法登录

我有点不知道catch（FaceBookApiexException$e）是做什么的。谁能告诉我怎么解决这个问题吗

编辑：

我尝试添加print\r（$e）像这样：

http://localhost/test.php?code=AQAr4gedKEz01BGIGpIB5Ijh66bk9j7qhW9...etc

protected function getAccessTokenFromCode($code, $redirect_uri = null) {
    .
    .
    .
    try {
      // need to circumvent json_decode by calling _oauthRequest
      // directly, since response isn't JSON format.
      $access_token_response =
        $this->_oauthRequest(
          $this->getUrl('graph', '/oauth/access_token'),
          $params = array('client_id' => $this->getAppId(),
                          'client_secret' => $this->getAppSecret(),
                          'redirect_uri' => $redirect_uri,
                          'code' => $code));
    } catch (FacebookApiException $e) { 
      // most likely that user very recently revoked authorization.
      // In any event, we don't have an access token, so say so.
      return false;
    }
    .
    .
    .
}

catch (FacebookApiException $e) { 
      // most likely that user very recently revoked authorization.
      // In any event, we don't have an access token, so say so.
      print_r($e);
      return false;
}

---

这是它打印出来的错误：。这里到底出了什么问题？

考虑试用新版SDK:docs:@Fosco谢谢你的建议。我刚试完，同样的事情正在发生。我只剩下带？code=..的url了。。。。附加到它，而不是登录。你应该使用Facebook的重定向url的特定页面，并在该页面上使用FacebookRedirectLoginHelper使用getSessionFromRedirect处理代码。我尝试将其重定向到其他页面，并按照你说的做。但是没有运气。url中的代码没有得到处理。我觉得问题出在我的环境中，因为相同的问题在sdk的两个版本中重复出现。@Fosco，请查看编辑。