UPDATE 2:
好的,通过修改:
让它"有点"工作$loginUrl = $facebook->getLoginUrl(array(
'canvas' => 1,
'fbconnect' => 0,
'req_perms' => 'publish_stream',
'next' => 'http://'.$_SERVER['SERVER_NAME'].'/success.php',
'cancel_url' => 'http://'.$_SERVER['SERVER_NAME'].'/cancel.php'
));
:
$loginUrl = $facebook->getLoginUrl(array(
'canvas' => 1,
'fbconnect' => 0,
'req_perms' => 'publish_stream',
'next' => 'http://'.$_SERVER['SERVER_NAME'].'/success.php',
'cancel_url' => 'http://'.$_SERVER['SERVER_NAME'].'/cancel.php'
));
header('Location: '.$loginUrl);
。我添加了header('Location: '.$loginUrl);
.
但是页面的行为很奇怪。我必须导航到页面,登录,然后刷新页面,再次登录,然后它会问我是否允许发布到页面,最终它会发布到页面。
为什么我必须登录两次?
更新1:我现在有以下脚本似乎不工作。在这个状态下,我只是想在我自己的墙上发帖,但最终也会想在朋友墙上发帖:
<?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 'facebook.php';
// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
'appId' => '<appId removed for security reasons>',
'secret' => '<secret removed for security reasons>',
'cookie' => true,
));
// We may or may not have this data based on a $_GET or $_COOKIE based session.
//
// If we get a session here, it means we found a correctly signed session using
// the Application Secret only Facebook and the Application know. We dont know
// if it is still valid until we make an API call using the session. A session
// can become invalid if it has already expired (should not be getting the
// session back in this case) or if the user logged out of Facebook.
$session = $facebook->getSession();
$me = null;
// Session based API call.
if ($session) {
try {
$uid = $facebook->getUser();
$me = $facebook->api('/me');
$post = $facebook->api("/me/feed", "POST", array('message' => 'Hello! I''m using the FB Graph API!'));
} 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 = $facebook->getLoginUrl(array(
'canvas' => 1,
'fbconnect' => 0,
'req_perms' => 'publish_stream',
'next' => 'http://'.$_SERVER['SERVER_NAME'].'/success.php',
'cancel_url' => 'http://'.$_SERVER['SERVER_NAME'].'/cancel.php'
));
}
?>
<!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>
<!--
We use the JS SDK to provide a richer user experience. For more info,
look here: http://github.com/facebook/connect-js
-->
<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>
<h1><a href="example.php">php-sdk</a></h1>
<?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 ?>
</body>
</html>
我得到以下错误:
[Wed Apr 27 22:28:16 2011] [error] [client <ip address removed for security reasons>] OAuthException: (#200) The user hasn't authorized the application to perform this action, referer: http://<ip address removed for security reasons>/index.php
原始质疑:
我有以下工作脚本,允许某人使用他们的facebook详细信息登录到我的页面,然后我可以捕获他们的access_token,这样我就可以使用它与图形api:
<?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 'facebook.php';
// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
'appId' => 'app id goes here',
'secret' => 'secret id goes here',
'cookie' => true,
));
// We may or may not have this data based on a $_GET or $_COOKIE based session.
//
// If we get a session here, it means we found a correctly signed session using
// the Application Secret only Facebook and the Application know. We dont know
// if it is still valid until we make an API call using the session. A session
// can become invalid if it has already expired (should not be getting the
// session back in this case) or if the user logged out of Facebook.
$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>
<!--
We use the JS SDK to provide a richer user experience. For more info,
look here: http://github.com/facebook/connect-js
-->
<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>
<h1><a href="example.php">php-sdk</a></h1>
<?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 ?>
</body>
</html>
一旦用户登录,我知道我可以通过以下方式获得他们的朋友列表:
https://graph.facebook.com/me/friends?access_token=...
我不知道的是如何使用扩展权限,所以我的应用程序可以发布到用户朋友的facebook墙。
显然我应该使用扩展权限加上以下内容:
curl -F 'access_token=...' '
-F 'message=Hello, Arjun. I like this new API.' '
https://graph.facebook.com/arjun/feed
我不明白我应该如何在PHP中做到这一点
更新:
好吧,我不能自己测试,所以只是一些建议,你可以尝试。将$loginUrl
更改为:
$loginUrl = $facebook->getLoginUrl(array(
'req_perms' => 'publish_stream',
'next' => 'http://'.$_SERVER['SERVER_NAME'].'/success.php',
'cancel_url' => 'http://'.$_SERVER['SERVER_NAME'].'/cancel.php'
));
在整个上下文中,文件的顶部应该是这样的:
require 'facebook.php';
$facebook = new Facebook(array(
'appId' => '<appId removed for security reasons>',
'secret' => '<secret removed for security reasons>',
'cookie' => true,
));
$session = $facebook->getSession();
$me = null;
if ($session)
{
try
{
$uid = $facebook->getUser();
$me = $facebook->api('/me');
$post = $facebook->api("/me/feed", "POST", array('message' => 'Hello! I''m using the FB Graph API!'));
}
catch (FacebookApiException $e)
{
error_log($e);
}
}
else
{
$loginUrl = $facebook->getLoginUrl(array(
'req_perms' => 'publish_stream',
'next' => 'http://' . $_SERVER['SERVER_NAME'] . '/success.php',
'cancel_url' => 'http://' . $_SERVER['SERVER_NAME'] . '/cancel.php'
));
header('Location: ' . $loginUrl);
}
首先检查你是否有一个会话,因此你需要配置Facebook SDK,如示例所示:
$facebook = new Facebook(array(
'appId' => 'app id goes here',
'secret' => 'secret id goes here',
'cookie' => true,
));
然后你可以检查用户是否登录并且你的应用程序已被授权:
if ($facebook->getSession() == null) {
// not logged in or not authorized
}
在if
-子句中,您必须重定向到适当的登录url以获得所需的所有权限:
$loginUrl = $facebook->getLoginUrl(array(
'canvas' => 1,
'fbconnect' => 0,
'req_perms' => 'publish_stream',
'next' => // url where to go when you were authorized
'cancel_url' => // url to go to when user cancelled
));
header('Location: '.$loginUrl);
获得权限后,可以使用
按照文档中提到的方式发布。$facebook->api(/* url */, array(/* additional parameters go here */));
Facebook的文档显示了完成此操作的原始实现,即您粘贴的curl调用。这基本上只是演示功能,并没有真正解释如何在您选择的语言中完成任务。
正如Michael Rose在下面指出的,你需要,首先,请求在用户墙上发布的扩展许可。为了做到这一点,你的$loginUrl调用应该类似于:
$loginUrl = $facebook->getLoginUrl(array(
'canvas' => 1,
'fbconnect' => 0,
'req_perms' => 'publish_stream',
'next' => // url where to go when you were authorized
'cancel_url' => // url to go to when user cancelled
));
这将提示用户安装您的应用程序,并授予您访问publish_stream扩展权限,这是在他们的墙和他们的朋友的墙上发布所需的。
为了真正地制作墙报,你的代码将类似于这样:
$facebook->api("/{$friends_fb_uid}/feed", "POST",
array('message' => 'Hello! I''m using the FB Graph API!'));
在获得用户的许可后,您应该在POST请求或对页面的某些请求(甚至是ajax请求)上使用它。FB PHP SDK应该自动获取用户的访问令牌,对其进行验证,然后为您发出请求。
尝试从
header('Location: '.$loginUrl);
echo '<script>top.location="'.$loginUrl.'";</script>';
die();
我不记得在哪里,但我在某个地方读到你必须使用javascript做重定向。很久以前我读到过,所以它可能已经改变了