我会用JS-SDK https://developers.facebook.com/docs/reference/javascript/，一个完美的例子是Facebook PHP-SDK 示例 https://github.com/facebook/facebook-php-sdk/blob/master/examples/with_js_sdk.php本身：
<?php
require '../src/facebook.php';
$facebook = new Facebook(array(
'appId' => '344617158898614',
'secret' => '6dc8ac871858b34798bc2488200e503d',
));
// 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 $e) {
echo '<pre>'.htmlspecialchars(print_r($e, true)).'</pre>';
$user = null;
}
}
?>
<!DOCTYPE html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<body>
<?php if ($user) { ?>
Your user profile is
<pre>
<?php print htmlspecialchars(print_r($user_profile, true)) ?>
</pre>
<?php } else { ?>
<fb:login-button></fb:login-button>
<?php } ?>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({
appId: '<?php echo $facebook->getAppID() ?>',
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>
</body>
</html>
现在单击fb:login-button:
<fb:login-button scope="offline_access,publish_stream,sms,email,user_birthday,user_photos,user_photo_video_tags,user_checkins,friends_checkins"></fb:login-button>
将打开 Facebook 弹出窗口，授权过程后弹出窗口将自动关闭，并且auth.login事件将被触发，我会更改重新加载方法window.location.reload();到 ajax 调用来做你正在做的事情。
