$client->server = 'Facebook';
$client->redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . dirname(strtok($_SERVER['REQUEST_URI'], '?')) . '/login_check_with_facebook.php';
$client->client_id = '';
$application_line = __LINE__;
$client->client_secret = '';
if (strlen($client->client_id) == 0 || strlen($client->client_secret) == 0) {
die('Please go to Facebook Apps page https://developers.facebook.com/apps , ' . 'create an application, and in the line ' . $application_line . ' set the client_id to App ID/API Key and client_secret with App Secret');
}
/* The initial page to redirect is not set;
*/
$redirect_url = null;
/* API permissions
*/
$client->scope = 'email';
if ($success = $client->Initialize()) {
if ($success = $client->CheckAccessToken($redirect_url)) {
/*
* Is there a valid access token or shall we need to
* redirect the user to the OAuth server authorization page?
*/
if (isset($redirect_url)) {
/*
* It seems the access token was not yet retrieved
* or it was expired and could not be renewed
*/
} elseif (strlen($client->access_token)) {
$success = $client->CallAPI('https://graph.facebook.com/me', 'GET', array(), array('FailOnAccessError' => true), $user);
}
}
$success = $client->Finalize($success);
}
