我正在使用Facebook帐户信息登录并注销网站。为此,我已经使我的代码像这样
对于Index.html,我的代码就像这样
<div id="fb-root"></div>
<script type="text/javascript">
//<![CDATA[
window.fbAsyncInit = function() {
FB.init({
appId : 'XXXXXXXXXXXXXXXX', // App ID
channelURL : '', // Channel File, not required so leave empty
status : true, // check login status
cookie : true, // enable cookies to allow the server to access the session
oauth : true, // enable OAuth 2.0
xfbml : false // parse XFBML
});
};
// logs the user in the application and facebook
function login(){
FB.getLoginStatus(function(r){
if(r.status === 'connected'){
window.location.href = 'fbconnect.php';
}else{
FB.login(function(response) {
if(response.authResponse) {
//if (response.perms)
window.location.href = 'fbconnect.php';
} else {
// user is not logged in
}
},{scope:'email'}); // which data to access from user profile
}
});
}
// Load the SDK Asynchronously
(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>
<a href='#' onclick='login();'>Facebook Login</a>
在fbconnect.php中,我的代码看起来像这样
<?php
require 'src/facebook.php';
$facebook = new Facebook(array(
'appId' => 'XXXXXXXXXXXXXXXX',
'secret' => 'XXXXXXXXXXXXXXXXXXXXXXXXXXXX',
'cookie' => true,
));
$user = $facebook->getUser();
$loginUrl = $facebook->getLoginUrl();
//echo "<a href='$loginUrl'>login</a>";
$logoutUrl = $facebook->getLogoutUrl();
//echo $loginUrl;
if($user){
$_SESSION['user_info'] = $user;
$_SESSION['user_pro']= $facebook->api('/me');
echo $_SESSION['user_pro']['first_name'];
echo $_SESSION['user_pro']['last_name'];
echo '<pre>';
//print_r($_SESSION);
echo '</pre>';
}
else{
echo 'not logged in ';
}
echo "<a href='logout.php'>log out </a>"
?>
由于我也想要注销系统,以便用户也可以从网站注销我为此做了logout.php的代码
<?php
require 'src/facebook.php'; //including the facebook php sdk
$token = $facebook->getAccessToken();
$url = 'https://www.facebook.com/logout.php?next=' . YOUR_SITE_URL .
'&access_token='.$token;
session_destroy();
header('Location: '.$url);
?>
但这里显示错误,如
Notice: Undefined variable: facebook in logout.php on line 3 Fatal error: Call to a member function getAccessToken() on a non-object in logout.php on line 3.
这里很容易登录,但在注销时显示错误。有人可以告诉我如何解决这个问题吗?我是facebook应用程序的新手。所以任何帮助和建议都会非常明显。感谢
答案 0 :(得分:1)
尝试
require 'src/facebook.php';
$facebook = new Facebook(); //including the facebook php sdk
$token = $facebook->getAccessToken();
其中$facebook
是Facebook
类的实例。根据您的评论,如果您想从Facebook注销,那么您需要在注销功能中销毁会话,如
$facebook->destroySession();