我使用 facebook javascript sdk 让用户登录，然后使用 php sdk 进行其他进程。这是我的示例代码：
<?php
require_once('AppInfo.php');
require 'src/facebook.php';
$facebook = new Facebook(array(
'appId' => '*****',
'secret' => '*****',
));
// See if there is a user from a cookie
$user = $facebook->getUser();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
// If the call fails we check if we still have a user. The user will be
// cleared if the error is because of an invalid accesstoken
if (!$facebook->getUser()) {
header('Location: '. AppInfo::getUrl($_SERVER['REQUEST_URI']));
exit();
}
}
}
?>
<!DOCTYPE html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
<title>Facebook App</title>
<h1>Facebook App</h1>
</head>
<body>
<div id="fb-root"></div>
<script type="text/javascript">
window.fbAsyncInit = function() {
FB.init({
appId: '<?php echo $facebook->getAppID() ?>',
cookie: true,
xfbml: true,
status: true,
channelUrl : '//<?php echo $_SERVER["HTTP_HOST"]; ?>/fb/channel.html'
});
FB.Event.subscribe('auth.login', function(response) {
window.location.reload();
});
FB.Canvas.setAutoGrow();
};
// Load the SDK Asynchronously
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/all.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>
<?php if (isset($basic)) { ?>
<h1>Hi</h1>
<div>
<h1>Welcome Hero</h1>
<p class="tagline">
This is your app
</p>
</div>
<?php } else { ?>
<div>
<h1>Welcome Villian</h1>
<div class="fb-login-button" data-scope="user_likes,user_photos,publish_stream"></div>
</div>
<?php echo $user_profile[id];
echo "hhhh";} ?>
</body>
</html>
问题是我总是看到 Else 部分在运行。即使在用户登录后，它也会显示 else 部分。有人可以帮帮我吗