Facebook Connect 获取用户数据
我遵循 Facebook PHP SDK 示例并创建了以下内容。
<?php
require ("lib/facebook.php");
$facebook = new Facebook(array('appId' => 'XXXXXXXXXXXX', 'secret' => 'XXXXXXXXXXXXXXXXXXXXXXX', 'cookie' => true, ));
$session = $facebook->getSession();
$me = null;
// Session based API call.
if($session) {
try {
$uid = $facebook->getUser();
$me = $facebook->api('/me');
}
catch (FacebookApiException $e) {
error_log($e);
}
}
// login or logout url will be needed depending on current user state.
if($me) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
?>
<!doctype html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
<title>php-sdk</title>
<style>
body {
font-family: 'Lucida Grande', Verdana, Arial, sans-serif;
}
h1 a {
text-decoration: none;
color: #3b5998;
}
h1 a:hover {
text-decoration: underline;
}
</style>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({
appId : '<?php
echo $facebook->getAppId();
?>',
session : <?php
echo json_encode($session);
?>, // don't refetch the session when PHP already has it
status : true, // check login status
cookie : true, // enable cookies to allow the server to access the session
xfbml : true // parse XFBML
});
// whenever the user logs in, we refresh the page
FB.Event.subscribe('auth.login', function() {
window.location.reload();
});
};
(function() {
var e = document.createElement('script');
e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
e.async = true;
document.getElementById('fb-root').appendChild(e);
}());
</script>
<?php
if($me):
?>
<a href="<?php
echo $logoutUrl;
?>"> <img src="http://static.ak.fbcdn.net/rsrc.php/z2Y31/hash/cxrz4k7j.gif"> </a>
<?php
else:
?>
<div> Using JavaScript & XFBML:
<fb:login-button></fb:login-button>
</div>
<?php
endif;
?>
<h3>Session</h3>
<?php
if($me):
?>
<pre><?php
print_r($session);
?></pre>
<h3>You</h3>
<img src="https://graph.facebook.com/<?php
echo $uid;
?>/picture"> <?php
echo $me['name'];
?>
<h3>Your User Object</h3>
<pre><?php
print_r($me);
?></pre>
<?php
else:
?>
<strong><em>You are not Connected.</em></strong>
<?php
endif;
?>
<?php
print_r($me);
?>
</body>
</html>
当我点击登录时。当我允许时它会打开窗口。它刷新了窗口。只是为了显示相同的内容。当我执行 print_r($me) 时，什么都看不见。
当我检查应用程序设置时。该应用程序已安装在我的 Facebook 帐户中。
编辑
I have followed the Facebook PHP SDK example and created the following.
<?php
require ("lib/facebook.php");
$facebook = new Facebook(array('appId' => 'XXXXXXXXXXXX', 'secret' => 'XXXXXXXXXXXXXXXXXXXXXXX', 'cookie' => true, ));
$session = $facebook->getSession();
$me = null;
// Session based API call.
if($session) {
try {
$uid = $facebook->getUser();
$me = $facebook->api('/me');
}
catch (FacebookApiException $e) {
error_log($e);
}
}
// login or logout url will be needed depending on current user state.
if($me) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
?>
<!doctype html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
<title>php-sdk</title>
<style>
body {
font-family: 'Lucida Grande', Verdana, Arial, sans-serif;
}
h1 a {
text-decoration: none;
color: #3b5998;
}
h1 a:hover {
text-decoration: underline;
}
</style>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({
appId : '<?php
echo $facebook->getAppId();
?>',
session : <?php
echo json_encode($session);
?>, // don't refetch the session when PHP already has it
status : true, // check login status
cookie : true, // enable cookies to allow the server to access the session
xfbml : true // parse XFBML
});
// whenever the user logs in, we refresh the page
FB.Event.subscribe('auth.login', function() {
window.location.reload();
});
};
(function() {
var e = document.createElement('script');
e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
e.async = true;
document.getElementById('fb-root').appendChild(e);
}());
</script>
<?php
if($me):
?>
<a href="<?php
echo $logoutUrl;
?>"> <img src="http://static.ak.fbcdn.net/rsrc.php/z2Y31/hash/cxrz4k7j.gif"> </a>
<?php
else:
?>
<div> Using JavaScript & XFBML:
<fb:login-button></fb:login-button>
</div>
<?php
endif;
?>
<h3>Session</h3>
<?php
if($me):
?>
<pre><?php
print_r($session);
?></pre>
<h3>You</h3>
<img src="https://graph.facebook.com/<?php
echo $uid;
?>/picture"> <?php
echo $me['name'];
?>
<h3>Your User Object</h3>
<pre><?php
print_r($me);
?></pre>
<?php
else:
?>
<strong><em>You are not Connected.</em></strong>
<?php
endif;
?>
<?php
print_r($me);
?>
</body>
</html>
When i click Login. It opens the window and when i allow permission. It refreshes the window. only to show the same content. when i do a print_r($me) nothing is visible.
When i check in the Application settings. The application has been installed in my fb account.
EDIT
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评论（2）
检查您在应用程序配置中设置的 Canvas URL 是否与您正在执行代码的 URL 相同。
如果不一样，这是一种常见行为。
Check that the Canvas URL you have set up into your app configuration is the same that the one which you are executing the code.
If it's not the same, this is a common behaviour.
我认为画布 URL 的配置不符合您的应用程序。
你必须配置它，否则这是常见现象。
i think the canvas url is not configured well as per your application .
you have to configure it,otherwise it is the common phenomenan.