getUser总是返回0
我对这段代码有问题,我到处搜索,但没有得到这个问题的答案。 这是我的代码getUser总是返回0
<?php
require_once('facebook.php');
$facebook = new Facebook(array(
'appId' => 'XXXXXXXXXXXXXXX',
'secret' => 'XXXXXXXXXXXXXXX',
));
$user_id = $facebook->getUser();
echo $user_id;
?>
此代码每次返回即使当我登录Facebook上与我的帐户0,有人可以帮我解决这个问题,或者说明了什么问题?我使用的是Facebook的PHP-SDK-v3.1.1-21
我想让这样的事情,在登记表要添加Facebook的喜欢按钮,此按钮,他成为了球迷,当用户点击我的Facebook粉丝页面,如果他不打按钮脚本必须检查此和输出错误,在用户可以注册之前一定要打按钮,有人可以给我一些提示或脚本如何用PHP来实现这一点?
还有如何在这里使用的PHP SDK一个很好的例子:
https://github.com/facebook/php-sdk/tree/master/examples
<?php
/**
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
require '../src/facebook.php';
// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
'appId' => 'xxxxxxxxxxxxx',
'secret' => 'xxxxxxxxxxxx',
));
// Get User ID
$user = $facebook->getUser();
// We may or may not have this data based on whether the user is logged in.
//
// If we have a $user id here, it means we know the user is logged into
// Facebook, but we don't know if the access token is valid. An access
// token is invalid if the user logged out of Facebook.
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
// Login or logout url will be needed depending on current user state.
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
// This call will always work since we are fetching public data.
$naitik = $facebook->api('/naitik');
?>
<!doctype html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
<title>php-sdk</title>
<style>
body {
font-family: 'Lucida Grande', Verdana, Arial, sans-serif;
}
h1 a {
text-decoration: none;
color: #3b5998;
}
h1 a:hover {
text-decoration: underline;
}
</style>
</head>
<body>
<h1>php-sdk</h1>
<?php if ($user): ?>
<a href="<?php echo $logoutUrl; ?>">Logout</a>
<?php else: ?>
<div>
Login using OAuth 2.0 handled by the PHP SDK:
<a href="<?php echo $loginUrl; ?>">Login with Facebook</a>
</div>
<?php endif ?>
<h3>PHP Session</h3>
<pre><?php print_r($_SESSION); ?></pre>
<?php if ($user): ?>
<h3>You</h3>
<img src="https://graph.facebook.com/<?php echo $user; ?>/picture">
<h3>Your User Object (/me)</h3>
<pre><?php print_r($user_profile); ?></pre>
<?php else: ?>
<strong><em>You are not Connected.</em></strong>
<?php endif ?>
<h3>Public profile of Naitik</h3>
<img src="https://graph.facebook.com/naitik/picture">
<?php echo $naitik['name']; ?>
</body>
</html>
我想做这样的事情,以注册形式想要添加像Facebook一样的按钮,当用户点击这个按钮时,他成为我的Facebook粉丝页面的粉丝,如果他不像按钮脚本那样点击,必须检查这个并输出错误,那用户在注册之前一定要打按钮,有人会给我一些提示或者脚本如何用PHP来实现这个? – 2012-01-18 12:18:13
你不应该在一个问题中问两个问题。我已经回答了您的原始问题。请不要在线提出其他问题。请参阅:http://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work – DMCS 2012-01-18 14:04:26
好像$facebook->getUser();
不工作。仔细检查你是否正确链接到facebook.php。
此外,你可能想隐藏你的appId和秘密。 :-)
你好,这是一个可能的评论..因为它不是真正的回答问题,或者不能说明问题出在哪里 – 2013-02-08 17:48:34
我的代码与github相同,仍然getuser
返回0.这里是我的代码:这是我在测试应用程序之前对其进行测试的地方。
<?
require 'facebook.php';
$app_id = 'xxxxxxxxxxxxxxx';
$app_secret = 'xxxxxxxxxxxxxxxxxx';
$post_login_url = "http://myhandyapps.com/tester2.php";
$code = $_REQUEST["code"];
//Obtain the access_token with publish_stream permission
if(empty($code))
{
$dialog_url= "https://www.facebook.com/dialog/oauth?"
. "client_id=" . $app_id
. "&redirect_uri=" . urlencode($post_login_url)
. "&scope=publish_stream, photo_upload, user_photos, user_photo_video_tags";
echo("<script>top.location.href='" . $dialog_url .
"'</script>");
}
else{
$facebook = new Facebook(array(
'appId' => $app_id,
'secret' => $app_secret,
'cookie' => true,
));
// Get User ID
$user = $facebook->getUser();
echo "$user";
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
//echo "$user";
}
?>
编辑: 我改变我的这个代码固定它
$post_login_url = "http://myhandyapps.com/tester2.php";
到
$post_login_url = "http://apps.facebook.com/nspace_tester"; //got this to my app (CANVAS PAGE)
我有同样的问题,以后的试图找出很长一段时间是什么问题是,我发现你需要访问令牌来获取用户ID。要获取来自signed_request的访问令牌,用户必须先授权(获取权限)您的应用程序。我希望这会有所帮助
登录到Facebook还不够。你的应用程序也需要。 – 2012-01-17 21:02:30
该怎么办? – 2012-01-17 21:04:00
那里有[大量教程](https://www.google.com/search?q=php+facebook+connect)。看看其中的一些,并给它一个镜头。如果您有任何问题,请不要犹豫,随时回答一个具体问题。 – 2012-01-17 21:16:53