php获取时间计算时间差

用php获取本周、本月第一天与最后天时间戳。

1，获取今天的时间范围：

<?php$start = mktime(0,0,0,date("m"),date("d"),date("Y")); $end = mktime(0,0,0,date("m"),date("d")+1,date("Y")); 

2，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);}

3，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);

计算时间差

$one = strtotime(‘2011-12-08 07:02:40‘);//开始时间 时间戳
$tow = strtotime(‘2011-12-25 00:00:00‘);//结束时间 时间戳
$cle = $tow - $one; //得出时间戳差值

$d = floor($cle/3600/24);
$h = floor(($cle%(3600*24))/3600);  //%取余
$m = floor(($cle%(3600*24))600/60);
$s = floor(($cle%(3600*24))`);

echo "两个时间相差 $d 天 $h 小时 $m 分 $s 秒"

php获取时间计算时间差

原文地址：https://www.cnblogs.com/yixing/p/8992215.html