PHP 获取本月/本周第一天/最…

<!--获取本月第一天/最后一天的时间戳-->

<?php

 $year = date("Y");

 $month = date("m");

 $allday = date("t");

 $strat_time =strtotime($year."-".$month."-1");

 $end_time =strtotime($year."-".$month."-".$allday);

 echo date("Y-m-d",$strat_time );

 echo date("Y-m-d",$end_time)

?>

获取本周第一天/最后一天的时间戳

<?php

 $year = date("Y");

 $month = date("m");

 $day = date('w');

 $nowMonthDay = date("t");

 $firstday = date('d') - $day;

 if(substr($firstday,0,1) == "-"){

 $firstMonth = $month - 1;

 $lastMonthDay =date("t",$firstMonth);

 $firstday = $lastMonthDay -substr($firstday,1);

 $time_1 =strtotime($year."-".$firstMonth."-".$firstday);

 }else{

 $time_1 =strtotime($year."-".$month."-".$firstday);

 }

 $lastday = date('d') + (7 - $day);

 if($lastday >$nowMonthDay){

 $lastday = $lastday - $nowMonthDay;

 $lastMonth = $month + 1;

 $time_2 =strtotime($year."-".$lastMonth."-".$lastday);

 }else{

 $time_2 =strtotime($year."-".$month."-".$lastday);

 }

 echo date("Y-m-d",$time_1 );

 echo date("Y-m-d",$time_2)

?>

date_default_timezone_set('PRC'); //默认时区
echo "今天:",date("Y-m-d",time()),"<br>";
echo "今天:",date("Y-m-d",strtotime("18 june 2008")),"<br>";
echo "昨天:",date("Y-m-d",strtotime("-1 day")), "<br>";
echo "明天:",date("Y-m-d",strtotime("+1 day")), "<br>";
echo "一周后:",date("Y-m-d",strtotime("+1 week")), "<br>";
echo "一周零两天四小时两秒后:",date("Y-m-d G:H:s",strtotime("+1 week 2 days 4 hours 2 seconds")), "<br>";
echo "下个星期四:",date("Y-m-d",strtotime("next Thursday")), "<br>";
echo "上个周一:".date("Y-m-d",strtotime("last Monday"))."<br>";
echo "一个月前:".date("Y-m-d",strtotime("last month"))."<br>";
echo "一个月后:".date("Y-m-d",strtotime("+1 month"))."<br>";
echo "十年后:".date("Y-m-d",strtotime("+10 year"))."<br>";