private static function updateUser($userID, $username) { if (Zotero_Users::exists($userID)) { $currentUsername = Zotero_Users::getUsername($userID, true); if ($currentUsername != $username) { Zotero_Users::update($userID, $username); } } else { Zotero_Users::add($userID, $username); Zotero_Users::update($userID); } }