public function sessionhandler_gc($maxlifetime) {
		$files = scandir($this->save_path);
		foreach ($files as $file) {
			if ($file{0} === '.') continue;

			if (filemtime($this->save_path . $file) < time() - $maxlifetime) {
				unlink($this->save_path . $file);
			}
		}
		return true;
	}