//php获取今日开始时间戳和结束时间戳
$beginToday=mktime(0,0,0,date('m'),date('d'),date('Y'));
echo '$beginToday:'.date('Y-m-d H:i:s',$beginToday).'<br>';
$beginToday=strtotime('today');
echo '$beginToday:'.date('Y-m-d H:i:s',$beginToday).'<br>';
$endToday=mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1;
echo '$endToday:'.date('Y-m-d H:i:s',$endToday).'<br>';
$endToday=strtotime('today 23:59:59');
echo '$endToday:'.date('Y-m-d H:i:s',$endToday).'<br>';
//php获取昨日起始时间戳和结束时间戳
$beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y'));
echo '$beginYesterday:'.date('Y-m-d H:i:s',$beginYesterday).'<br>';
$beginYesterday=strtotime('yesterday');
echo '$beginYesterday:'.date('Y-m-d H:i:s',$beginYesterday).'<br>';
$endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1;
echo '$endYesterday:'.date('Y-m-d H:i:s',$endYesterday).'<br>';
$endYesterday=strtotime('yesterday 23:59:59');
echo '$endYesterday:'.date('Y-m-d H:i:s',$endYesterday).'<br>';
//php获取上周起始时间戳和结束时间戳
$beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y'));
echo '$beginLastweek:'.date('Y-m-d H:i:s',$beginLastweek).'<br>';
$beginLastweek=strtotime('first day of last week 00:00:00');
echo '$beginLastweek:'.date('Y-m-d H:i:s',$beginLastweek).'<br>';
$endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y'));
echo '$endLastweek:'.date('Y-m-d H:i:s',$endLastweek).'<br>';
$endLastweek=strtotime('this week -1 seconds 00:00:00');
echo '$endLastweek:'.date('Y-m-d H:i:s',$endLastweek).'<br>';
//php获取本月起始时间戳和结束时间戳
$beginThismonth=mktime(0,0,0,date('m'),1,date('Y'));
echo '$beginThismonth:'.date('Y-m-d H:i:s',$beginThismonth).'<br>';
$beginThismonth=strtotime('first day of this month 00:00:00');
echo '$beginThismonth:'.date('Y-m-d H:i:s',$beginThismonth).'<br>';
$endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));
echo '$endThismonth:'.date('Y-m-d H:i:s',$endThismonth).'<br>';
$endThismonth=strtotime('last day of this month 23:59:59');
echo '$endThismonth:'.date('Y-m-d H:i:s',$endThismonth).'<br>';