后端开发|php教程
php,php获取时间
后端开发-php教程
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<?php echo date("Ymd",strtotime("now")), "\n"; echo date("Ymd",strtotime("-1 week Monday")), "\n"; echo date("Ymd",strtotime("-1 week Sunday")), "\n"; echo date("Ymd",strtotime("+0 week Monday")), "\n"; echo date("Ymd",strtotime("+0 week Sunday")), "\n"; echo "*********第几个月:"; echo date( ); echo "*********本周周几:"; echo date("w"); echo "*********本月天数:"; echo date("t"); echo "*********"; echo
上周起始时间:
; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1-7,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7-7,date("Y"))),"\n"; echo
本周起始时间:
; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y"))),"\n"; echo
上月起始时间:
; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y"))),"\n"; echo
本月起始时间:
; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y"))),"\n"; $season = ceil((date( ))/3);//当月是第几季度 echo
本季度起始时间:
; echo date(Y-m-d H:i:s, mktime(0, 0, 0,$season*3-3+1,1,date(Y))),"\n"; echo date(Y-m-d H:i:s, mktime(23,59,59,$season*3,date( ,mktime(0, 0 , 0,$season*3,1,date("Y"))),date(Y))),"\n"; $season = ceil((date( ))/3)-1;//上季度是第几季度 echo
上季度起始时间:
; echo date(Y-m-d H:i:s, mktime(0, 0, 0,$season*3-3+1,1,date(Y))),"\n"; echo date(Y-m-d H:i:s, mktime(23,59,59,$season*3,date( ,mktime(0, 0 , 0,$season*3,1,date("Y"))),date(Y))),"\n";?>
php两个日期相减得天数：
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<?php function count_days($a,$b){ $a_dt=getdate($a); $b_dt=getdate($b); $a_new=mktime(12,0,0,$a_dt[mon],$a_dt[mday],$a_dt[year]); $b_new=mktime(12,0,0,$b_dt[mon],$b_dt[mday],$b_dt[year]); return round(abs($a_new-$b_new)/3600/24); } function count_days($formdate,$todate){ return round(abs(strtotime($formdate)-strtotime($todate))/3600/24); }
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