public function set_last_page() { if (!isset($_SESSION['current_page']) || $_SESSION['current_page'] != Session::current_page_url()) { $current_page = isset($_SESSION['current_page']) ? $_SESSION['current_page'] : ""; $_SESSION['last_page'] = $current_page; $_SESSION['current_page'] = Session::current_page_url(); $log = new Log('navigation'); $log->add_entry('Page Change', $_SESSION['current_page'] . "- " . $_SESSION['last_page']); } }