date1 = date('Ymd'His); //20160526000000date2 = date('YmdHis',strtotime("-1800 secode")); //현재날짜에서 1800초를 뺀다. $today = time(); //1462933266$todaytime = $today - 86400; //86400초를 뺀다.$todayYmd = date('Ymd', strotime('-7 day', $today)); //20160503
