Facebook登录按钮仅在第二次单击时有效 [英] Facebook login button works only on the second click
问题描述
我正在使用php facebook类,并使用$f->getLoginUrl()
在我的页面上放置了一个登录按钮,问题是该按钮在我第一次单击时不起作用.它会执行预期的操作并返回我的站点,但$f->getUser()
为空.
奇怪的是,当我第二次单击该按钮时,它可以正常工作.
I'm using the php facebook class and put a login button on my page with $f->getLoginUrl()
, the problem is this button does not work at first time I click on it. It does what it's supposed to and returns to my site but the $f->getUser()
is empty.
Strange thing is when I click the button the second time then it works flawlessly.
$facebook = new Facebook(array(
'appId' => '25317735807xxxx',
'secret' => '37e5dd05657f2cc2a1bdc9974985xxxx',
'redirURL' => 'http://mysite.com/',
));
$fb_login = '<a href="' . $facebook->getLoginUrl() . '" class="fb-login-button"><img src="img/fb-login-button.png" border="0" /></a>';
$fb_user = $facebook->getUser();
$user_level = 4;
if($page_access[$glob['pag']]['session'])
{
session_start();
}
if ($_SESSION[U_ID])
{
$user_level = $_SESSION['access_level'];
require_once("classes/cls_auth.php");
$auth = new auth();
$show_connect_alert = $auth->check_connection();
if($glob['pag'] == 'register' && $_SESSION[U_ID])
{
$glob['pag'] = 'profile';
}
}
else
{
//check if fb session exists
if ($fb_user)
{
try
{
$db = new mysql_db();
$db->query("SELECT email, password FROM member WHERE fb_id = $fb_user");
if ($db->move_next())
{
$glob['email'] = $db->f('email');
$glob['password'] = $db->f('password');
require_once("classes/cls_auth.php");
$auth = new auth();
$auth->login($glob);
}
else
{
$user_profile = $facebook->api('/me');
$glob['pag'] = "fboptions";
}
}
catch (FacebookApiException $e)
{
$glob['fb-error'] = $e;
unset($fb_user);
$user_level = 4;
}
}
else
{
// check login cookie
if(isset($_COOKIE['stagescan']))
{
list($arr['email'], $arr['password']) = explode(",", $_COOKIE['stagescan']);
require_once("classes/cls_auth.php");
$auth = new auth();
if(!$auth->login($arr))
{
setcookie('stagescan', "", time()-3600, "http://mysite.com/");
}
else
{
$glob['debug'] = "User logged in from cookie";
}
}
else
{
$user_level = 4;
}
}
}
推荐答案
您是否已在JavaScript部分中添加了标准FB处理程序?他们应该重新加载页面并设置一些cookie,以便使Facebook API正常工作...
Have you added the standard FB handlers in your javascript portion? They are supposed to reload the page and set some cookies for the facebook API to work...
<!-- FACEBOOK JAVASCRIPT HANDLER START -->
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({
appId: '%CONTEST_FACEBOOKAPPID%',
cookie: true,
xfbml: true,
oauth: true
});
FB.Event.subscribe('auth.login', function(response) {
window.location.reload();
});
FB.Event.subscribe('auth.logout', function(response) {
window.location.reload();
});
};
(function() {
var e = document.createElement('script'); e.async = true;
e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
document.getElementById('fb-root').appendChild(e);
}());
</script>
<!-- FACEBOOK JAVASCRIPT HANDLER END -->
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