2012-09-04 90 views
0

这是我的代码:Facebook的API:的getUser()总是返回0

<html> 
    <head> 
    <body> 
     <?php 
     require_once 'facebook-php-sdk/src/facebook.php'; 

     $appapikey = '453976824647366'; 
     $appsecret = 'fe86f3b0b34b3ed6eb39bbce717b8062'; 

     $facebook = new Facebook($appapikey, $appsecret); 

     $user_id = $facebook->getUser(); 
     echo $user_id; 



     echo "<p>Hello <fb:name uid=\"$user_id\" useyou=\"false\" linked=\"false\" firstnameonly=\"true\"></fb:name>"; 
     ?> 

    </body> 

</head> 
</html> 

的东西很简单,但我不能设法找到原因的getUser总是返回0 我会感谢您的帮助!

+0

粘贴这将是很好的掩盖API密钥和密码这种方式有没有安全问题,没有多余的使用应用程序的完成。未经授权的使用可能导致Facebook阻止您的帐户 – pal4life

回答

1

要检查的第一件事是

require_once 'facebook-php-sdk/src/facebook.php'; 

确保它是相对于您的PHP代码是不是到服务器结构。

为了测试这段代码,我可能只是使用Facebook sdk提供的现有示例,这样你就可以自信地知道它真的起作用,然后可以根据需要调整它。 正是从这个链接 https://github.com/facebook/facebook-php-sdk/blob/master/examples/example.php

<?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' => '344617158898614', 
    'secret' => '6dc8ac871858b34798bc2488200e503d', 
)); 

// 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> 
0

用户必须先登录。

用户登录后(通过Facebook发送到您的网站)将显示其ID。

+0

嗡嗡声实际上是我在上面提供的代码中,我试图用来获取用户信息。 所以,如果我理解你的权利?我需要先认证? – Slrg

0

我相信)的构造函数需要您的应用程序的ID和秘密的阵列,以及b)您需要首先登录的用户。

如果您查看的页面为Facebook PHP SDK GitHub上,在$facebook->getUser();的调用之后,您会注意到它们有一段关于进行API调用的部分,另一部分关于生成登录或注销URL,具体取决于用户是否登录。

流程是这样的:

  1. 检查是否有在会话的用户
  2. 试图获取用户详细信息
  3. 如果没有用户,重定向到登录URL

当用户回到你的应用程序,用户将进入会话。

+0

我已经登录了自己的帐户。所以我应该至少能看到我的名字! – Slrg

+0

这可能是。但*您的*网站不知道*您*已登录到Facebook;您需要首先进行身份验证,以便SDK知道谁是我。 –