public function run()
{
// 清理一个月前的数据
$mon = time() - 2592000;
$stn = Database::sql('DELETE FROM `card` WHERE add_time<? AND status=0');
$stn->bindValue(1, $mon, Database::PARAM_INT);
$stn->execute();
$stn = Database::sql("DELETE FROM `invite` WHERE dateLine<? AND status=1");
$stn->bindValue(1, $mon, Database::PARAM_INT);
$stn->execute();
}