php 获取今日、昨日、上周、本月的起始时间戳和结束时间戳的方法

$beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y'));
$endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1;
 
//php获取上周起始时间戳和结束时间戳
 
$beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y'));
$endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y'));
 
//php获取本月起始时间戳和结束时间戳
 
$beginThismonth=mktime(0,0,0,date('m'),1,date('Y'));
$endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));

//php获取今日开始时间戳和结束时间戳
$beginToday=mktime(0,0,0,date('m'),date('d'),date('Y'));
$endToday=mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1;
//php获取昨日起始时间戳和结束时间戳
$beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y'));
$endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1;
//php获取上周起始时间戳和结束时间戳
$beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y'));
$endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y'));
//php获取本月起始时间戳和结束时间戳
$beginThismonth=mktime(0,0,0,date('m'),1,date('Y'));
$endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));

//获取今天00:00
$todaystart = strtotime(date('Y-m-d'.'00:00:00',time()));
//获取今天24:00
$todayend = strtotime(date('Y-m-d'.'00:00:00',time()+3600*24));
//统计今天注册的用户
$todayuser['create_time'] = array(between,"$todaystart,$todayend");
$todaysum = $Users->where($todayuser)->count();

//获取昨天00:00
$timestart = strtotime(date('Y-m-d'.'00:00:00',time()-3600*24));
//获取今天00:00
$timeend = strtotime(date('Y-m-d'.'00:00:00',time()));
//统计昨天注册的用户
$map['create_time'] = array(between,"$timestart,$timeend");
$daycount = $Users->where($map)->count();

$this->assign("todaysum",$todaysum);
$this->assign("daycount",$daycount);