Facebook PHP SDK: Fatal error: Uncaught OAuthException: An active access token must be used to query information about the current user

facebookfacebook-php-sdk

I am using the PHP SDK to handle my Facebook connects. Everything was working fine for some time but my script suddenly stopped working. Here is what happens:

$facebook = new Facebook(array('appId' => $app_id, 'secret' => $app_secret, 'cookie' => true));

$user = $facebook->getUser();

if ($user) {

    $permissions = $facebook->api('/me/permissions');

} else {

    $params = array();
    $params['scope'] = 'publish_actions,user_photos';
    header('Location: ' . $facebook->getLoginUrl($params));
    exit();

}

Returns: Fatal error: Uncaught OAuthException: An active access token must be used to query information about the current user.

The error is caused by the line

$permissions = $facebook->api('/me/permissions');

Any suggestions?

Best Answer

Always check exceptions! Here's a quick example: https://developers.facebook.com/docs/reference/php/facebook-api/

$user returns a user ID for the current user, however, that doesn't guarantee that the user didn't log out meanwhile or that his token is still active. So instead of just relying on this because you got a user_id, check for exceptions. You can either ask the user to click Login again or simply redirect the user to the login page automatically if an exception occurs.

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I had this problem and what solved it in my case was deleting the App from the FB User's profile and adding it again creating a new ACCESS_TOKEN. I do not know why, but this solved by problem.

Php – facebook Uncaught OAuthException: An active access token must be used to query information about the current user

Just check for the current Facebook user id $user and if it returned null then you need to reauthorize the user (or use the custom $_SESSION user id value - not recommended)

require 'facebook/src/facebook.php';


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

$user = $facebook->getUser();

$photo_details = array('message' => 'my place');
$file='photos/my.jpg'; //Example image file
$photo_details['image'] = '@' . realpath($file);

if ($user) {
  try {
    // We have a valid FB session, so we can use 'me'
    $upload_photo = $facebook->api('/me/photos', 'post', $photo_details);
  } catch (FacebookApiException $e) {
    error_log($e);
  }
}


// login or logout url will be needed depending on current user state.
if ($user) {
  $logoutUrl = $facebook->getLogoutUrl();
} else {
// redirect to Facebook login to get a fresh user access_token
  $loginUrl = $facebook->getLoginUrl();
  header('Location: ' . $loginUrl);
}

I've written a tutorial on how to upload a picture to the user's wall.

Best Answer

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