php 获取 今天、昨天、这周、上周、这月、上月、近30天

<?PHP
//今天
$today = date("Y-m-d");
昨天
$yesterday = date("Y-m-d",strtotime(date("Y-m-d"))-86400上周
$lastweek_start = date("Y-m-d H:i:s",1)">mktime(0,1)">date("m"),1)">date("d")-date("w")+1-7,1)">date("Y")));
$lastweek_end = mktime(23,59,1)">date("w")+7-7,1)">)));
本周
$thisweek_start = date("w")+1,1)">$thisweek_end = date("w")+7,1)">上月
$lastmonth_start = date("m")-1,1,1)">$lastmonth_end = 本月
$thismonth_start = $thismonth_end = date("t"),1)">本季度未最后一月天数
$getMonthDays = date("t",1)">date('n')+(date('n')-1)%3,1)">本季度/
$thisquarter_start = date('Y-m-d H:i:s',1)">date('n')-(date('Y'$thisquarter_end = $getMonthDays,1)">)));
?>