必須使用活動訪問令牌來查詢有關當前用戶的信息

Question

使用簡單的代碼時，標題中始終出現錯誤：

require_once('sdk/src/facebook.php');
require_once("AppInfo.php");
function idx(array $array, $key, $default = null) {
  return array_key_exists($key, $array) ? $array[$key] : $default;
}
function he($str) {
  return htmlentities($str, ENT_QUOTES, "UTF-8");
}
$facebook = new Facebook(array(
  'appId'  => AppInfo::appID(),
  'secret' => AppInfo::appSecret(),
  'sharedSession' => true,
  'trustForwarded' => true,
));

$arrayForJSON=array();
$user = $facebook->getUser();
$friends = idx($facebook->api('/me/friends'), 'data', array());
if ($friends) {
  $arrayForJSON['friends']=$friends;
}
print_r($friends);

我真的不知道該怎么解決，我一直在尋找並嘗試許多關於stackoverflow的答案

Answer 1

您需要將訪問令牌設置為能夠獲取數據或代表用戶執行操作。 您是否正在通過登錄流程來允許對您的Facebook應用程序進行授權？

在https://developers.facebook.com/docs/reference/php/facebook-api/上嘗試該示例

它提供了非常基本的登錄流程，該流程將授予對所需數據的訪問權限。

Answer 2

您需要檢查是否已經登錄，否則無法將用戶重定向到登錄鏈接

require '../src/facebook.php';

// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
  'appId'  => '191149314281714',
  'secret' => '73b67bf1c825fa47efae70a46c18906b',
));

// 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');
   $friends = idx($facebook->api('/me/friends'), 'data', array());

  } 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(array('scope'=>'offline_access'));
}