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Php facebook扩展权限

php facebook facebook-graph-api

Php facebook扩展权限,php,facebook,facebook-graph-api,facebook-php-sdk,facebook-authentication,Php,Facebook,Facebook Graph Api,Facebook Php Sdk,Facebook Authentication,更新2: 好的，通过改变它“有点”工作： $loginUrl = $facebook->getLoginUrl(array( 'canvas' => 1, 'fbconnect' => 0, 'req_perms' => 'publish_stream', 'next' => 'http://'.$_SERVER['SERVER_NAME'].'/success.php',

更新2:

好的，通过改变它“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'
        ));
为此：

$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);
i、 e.我添加了
标题（'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，然后它会要求我允许发布到页面，最后它会发布到页面

为什么我必须登录两次

更新1:

我现在有下面的脚本，它似乎不起作用。在这种状态下，我只是想在自己的墙上发帖，但最终也会想在朋友的墙上发帖：


<?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 &amp; 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>


我搞不懂的是如何使用扩展权限，这样我的应用程序就可以发布到用户朋友的facebook墙壁上

显然，我应该使用扩展权限加上以下内容：


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);
}



我不明白如何从PHP实现这一点。
Facebook文档显示了实现这一点的原始实现，即您粘贴的curl调用。这基本上只是演示功能，并不是真正解释如何在您选择的语言中完成任务

正如MichaelRose在下面指出的，首先，你需要申请在用户墙上发布的扩展权限。为此，您的$loginUrl调用应该类似于：


$facebook = new Facebook(array(
    'appId'  => 'app id goes here',
    'secret' => 'secret id goes here',
    'cookie' => true,
));


这将提示用户安装您的应用程序，并授予您访问publish_stream扩展权限的权限，该权限是发布到他们的墙和他们朋友的墙所必需的

为了实际制作墙柱，您的代码将类似于：


if ($facebook->getSession() == null) {
   // not logged in or not authorized
}



在获得用户许可后，您应该在POST请求或对页面的某些请求（如果您愿意，甚至是ajax请求）中使用此选项。FB PHP SDK应自动获取用户的访问令牌，对其进行验证，并为您发出请求。
更新：

嗯，我自己不能真正测试它，所以只有一些建议，你可以尝试一下。将
$loginUrl
更改为：


$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);


在整个上下文中，文件顶部应如下所示：


$facebook->api(/* url */, array(/* additional parameters go here */));


然后，您可以检查用户是否已登录，您的应用是否已获得授权：


echo '<script>top.location="'.$loginUrl.'";</script>';
die();


在
if
-子句中，您必须重定向到正确的登录url以获得所需的所有权限：

获得权限后，您可以使用

试着从

到


echo'top.location=“.$loginUrl.”“；”；
模具（）；



我不记得在哪里，但我在某个地方读到，您必须使用javascript进行重定向。很久以前我读过，所以它可能已经改变了。
基本上，我需要使用您提供的代码，通过页面上的按钮激活吗？oshirowanen：提供的代码将用于服务器端，因此在页面加载或POST请求时可能是有益的。当你可能会问用户他们想在谁的墙上张贴，或者他们想发布什么消息（我怀疑你想在他们朋友的墙上张贴“我正在使用fb graph api”）@oshi是的，在你获得扩展权限后，代码可以用于在墙上张贴。你必须明确地请求他们。正如michael指出的，你需要获得扩展许可才能张贴到墙上。我已经在上面扩展了我的答案，向你展示了如何做到这一点。谢谢，明天我将不得不尝试这个。没时间了。感谢您的帮助。请参阅原始问题中的更新1。我收到一个错误。请参阅原始问题中的更新2。它正在工作，但并不像预期的那样。我不确定的一点是，我有一个facebook登录按钮，它要求用户登录，给我他们的身份验证id，如果我点击另一个按钮，它应该只是请求允许在墙上发布，对吗？但出于某种原因，它希望我再次登录。但是我没有一个按钮来做那件事。我如何添加按钮来发布值。现在一切都发生在页面加载上。

$loginUrl = $facebook->getLoginUrl(array(
    'req_perms' => 'publish_stream',
    'next' => 'http://'.$_SERVER['SERVER_NAME'].'/success.php',
    'cancel_url' => 'http://'.$_SERVER['SERVER_NAME'].'/cancel.php'
));



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);
}



$facebook = new Facebook(array(
    'appId'  => 'app id goes here',
    'secret' => 'secret id goes here',
    'cookie' => true,
));



if ($facebook->getSession() == null) {
   // not logged in or not authorized
}



$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);



$facebook->api(/* url */, array(/* additional parameters go here */));



header('Location: '.$loginUrl);



echo '<script>top.location="'.$loginUrl.'";</script>';
die();