php-Facebook SDK getAccessToken()问题

我在使用Facebook SDK时遇到了一些麻烦,特别是在获取访问令牌时.该应用已在Facebook上正确设置,并已获得许可.据我所知,代码是正确的,而且我不确定getAccesstoken()出了什么问题.

$facebook-> getAccesstoken();返回“ 12345678 | abcdefghijklmnop”,基本上是某种变量,由应用程序ID和秘密ID组成,中间用|分隔.

$facebook-> getUser();返回“ 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();
?>

先感谢您！

解决方法:

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);
    }

    return $this->accesstoken;
  }

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

当您进行用户签名时,您的访问令牌将是APP ID | APP SECRET(这是应用程序令牌),或者是A RANDOM TOKEN HERE(这是用户访问令牌).

$facebook->getUser();

当getUser()返回0(与false相同,并且用户未签名)时,您需要为应用程序请求登录名和授权(如果尚未授权)：

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;
}

在此处查看可用的权限类型：https://developers.facebook.com/docs/authentication/permissions/