일단 소스를 보자. $today= date("Y-m-d H:i:s"); echo "오늘 날짜 :".$today.""; $strt= strtotime($today); echo "오늘 날짜(Y-m-d H:i:s)를 숫자형으로 : ".$strt.""; echo "시작 날짜 : ".date("Y-m-d H:i:s","1973862000").""; echo "마지막날짜 : ".date("Y-m-d H:i:s","1446625932").""; echo ""; echo "========================================================"; $s_start = "2032-07-20 00:00:00"; $s_end = "2012-07-21 23:59:59"; $strt_start= s..