Facebook SDK getAccessToken（）问题 [英] Facebook SDK getAccessToken() problems

问题描述

我在facebook SDK中遇到麻烦，特别是检索访问令牌。该应用程序在Facebook上正确设置并已获得许可。据我所知，代码是正确的，我不知道getAccessToken（）发生了什么。

$ facebook-> getAccessToken（） ; 正在返回12345678 | abcdefghijklmnop，基本上是由App ID和Secret ID组成的一些变量，分隔为|

$ facebook-> getUser（）; 正在返回' 0 '

 <？php 
 require_once（facebook.php）; //最新的SDK文件从Git 
 
 $ app_id =12345678; //替换为假
 $ app_secret =abcdefghijklmnop; //替换为假
 
 $ facebook = new Facebook（array（
'appId'=> $ app_id，
'secret'=> $ app_secret，
'cookie'=> true; //我在这里尝试'false'以及
））; 
 
 $ token = $ facebook-> getAccessToken（）; 
？> 
  

提前谢谢！

解决方案

从Facebook SDK：

  public function getAccessToken（）{
 if this-> accessToken！== null）{
 return $ this-> accessToken; 
} 
 
 $ this-> setAccessToken（$ this-> getApplicationAccessToken（））; 
 $ user_access_token = $ this-> getUserAccessToken（）; 
 if（$ user_access_token）{
 $ this-> setAccessToken（$ user_access_token）; 
} 
 
返回$ this-> accessToken; 
} 
 
 protected function getApplicationAccessToken（）{
 return $ this-> appId。'|'。$ this-> appSecret; 
} 
  

您的访问令牌将为 APP ID | APP SECRET 哪个是应用程序令牌，或这里有随身携带，这是用户访问令牌，当您有用户签名：

  $ facebook-> getUser（）; 
  

当 getUser（）返回 0 （与 false 相同，用户未签名），您需要申请登录和授权（如果没有授权（$）
$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ b $ login_url = $ facebook-> getLoginUrl（array（
'scope'=>'publish_stream'//权限在这里
）
）;
？>
< script type =text / javascript>
top.location.href =<？php echo $ login_url;？>;
< / script>
<？php
exit;
}

在这里查看可用的权限类型： https://developers.facebook.com/docs/authentication/permissions/

I have been having some trouble with the facebook SDK, specifically retrieving an access token. The App is set up on Facebook correctly and has been given permission. As far as I can tell, the code is correct and I am not sure what is going wrong with getAccessToken().

$facebook->getAccessToken(); is returning "12345678|abcdefghijklmnop", basically some kind of variable which is made up of the App ID and Secret ID separated by a |

$facebook->getUser(); is returning '0'

<?php
     require_once("facebook.php"); //Up-to-date SDK files from Git

     $app_id = "12345678"; //replaced with fake
     $app_secret = "abcdefghijklmnop"; //replaced with fake

     $facebook = new Facebook(array(
         'appId' => $app_id,
         'secret' => $app_secret,
         'cookie' => true; //I have tried 'false' here as well
     ));

     $token = $facebook->getAccessToken();
?>

Thank you in advance!

解决方案

From Facebook SDK:

  public function getAccessToken() {
    if ($this->accessToken !== null) {
      return $this->accessToken;
    }

    $this->setAccessToken($this->getApplicationAccessToken());
    $user_access_token = $this->getUserAccessToken();
    if ($user_access_token) {
      $this->setAccessToken($user_access_token);
    }

    return $this->accessToken;
  }

  protected function getApplicationAccessToken() {
    return $this->appId.'|'.$this->appSecret;
  }

Your access token will be APP ID|APP SECRET which is the application token, or A RANDOM TOKEN HERE, which is the user access token, when you have a user signed:

$facebook->getUser();

When getUser() return 0 (which is same as false, and user not signed) you need to request a login, and authorization (if have not authorized yet) for your application:

if (!$facebook->getUser())
{
    $login_url = $facebook->getLoginUrl(array(
            'scope' => 'publish_stream' // Permissions goes here
        ) 
    );
?>
    <script type="text/javascript">
        top.location.href = " <?php echo $login_url; ?>";
    </script>
<?php
    exit;
}

see available permissions types here: https://developers.facebook.com/docs/authentication/permissions/

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