Facebook XFBML登录按钮阻止弹出

Question

说来话长

我目前在一个网站上工作，限制它的一些内容注册用户(用户，谁已经填写了注册表)和facebook用户(谁已经授权网站访问他们的信息)。我使用cookie来存储用户最后一次访问该站点时使用的登录类型。0代表“无登录”或“用户注销”，1代表“注册用户”，3代表"facebook用户“。如果facebook用户已经登录到他们的facebook帐户，我希望站点仅在cookie为"2“时才让用户登录(之前的登录是使用facebook登录完成的)。否则，我希望用户单击"facebook登录“按钮。默认情况下，它会打开一个弹出窗口，然后立即将其关闭。我如何才能防止弹出窗口显示出来，而是将用户发送到特定的URL？

对于那些不理解我杂乱无章的演讲或者只是想切中要害的人

我有一个脸书登录按钮()，而不是弹出，我需要它来重定向用户。

Answer 1

使用FB.getLoginStatus() Javascript SDK函数检查用户的登录状态。请参阅：http://developers.facebook.com/docs/reference/javascript/FB.getLoginStatus/

Answer 2

使用PHP-SDK：

<?php
require 'facebook.php'; # The SDK

# Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
  'appId'  => 'APPID',
  'secret' => 'APPSECRET',
));
# ----------------------------------------------------------------------------------------
# ----------------------------------------------------------------------------------------

// Get User ID
$user = $facebook->getUser();

/* We may or may not have this data based on whether the user is logged in.
   If we have a $user id here, it means we know the user is logged into
   Facebook, but we don't know if the access token is valid. An access
   token is invalid if the user logged out of Facebook. */

if ($user) {
  try {
    # Proceed knowing you have a logged in user who's authenticated.
    $dt = $facebook->api('/me'); # User Data
    $lk = $facebook->api('/me/likes'); # User like's Data
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }
}

# ----------------------------------------------------------------------------------------
# ----------------------------------------------------------------------------------------
# Handler for Login Status
if ($user) {
  $logoutUrl = $facebook->getLogoutUrl();
} else {

  # This is the User LogIn URL, and if the user hasn't already given your app the permissions this url will ask him/her for that.      

  # After the 'scope' is where the permission are written.

  $loginUrl = $facebook->getLoginUrl(array("scope" => "email,user_birthday,user_likes,user_work_history,user_location,user_education_history"));
}
# -------------------------------------------------------------------------------------
if (!$user): header ('Location:'.$loginUrl.''); # This is where we check if the user is logged in to facebook or not, if not, the user will be re-directed to the log in page.
    else: 
    # If the user is logged in, do some code...

    endif;
?>