非常全面的php日期时间运算汇总

<?php 
echo(date("M-d-Y",mktime(0,0,0,12,36,2001))); 
echo(date("M-d-Y",mktime(0,0,0,14,1,2001))); 
echo(date("M-d-Y",mktime(0,0,0,1,1,2001))); 
echo(date("M-d-Y",mktime(0,0,0,1,1,99))); 
?> 

Jan-05-2002 
Feb-01-2002 
Jan-01-2001 
Jan-01-1999 

<?php 
$startdate=strtotime("2015-9-5"); 
$enddate=strtotime("2015-9-18"); //上面的php时间日期函数已经把日期变成了时间戳，就是变成了秒。这样只要让两数值相减，然后把秒变成天就可以了，比较的简单，如下： 
$days=round(($enddate-$startdate)/3600/24) ; 
echo $days; //days为得到的天数; 
?> 

 <? 
date_default_timezone_set('Asia/Shanghai'); 
//以上一句为设置时区，其实不设也行，但是zde debug的时候会有提示，说什么不安全的函数…添上吧。 
 
echo date('Y-m-d H:i:s').' 今天是'.date('Y').'年的第'.date('W').'周'; 
 
$stime='2005-11-03 10:08'; 
echo "<br/><br/>***自出生(<font color=blue>$stime</font>)以来…：<br/><br/>"; 
echo "今天是第<font color=red><b>".Lnbsp(daysofnow($stime),3)."</b></font>天<br/>"; 
echo "今天是第<font color=red><b>".Lnbsp(weeksofnow($stime),3)."</b></font>周<br/>"; 
echo "今天是第<font color=red><b>".Lnbsp(monthsofnow($stime),3)."</b></font>个月<br/>"; 
echo "今天是第<font color=red><b>".Lnbsp(yearsofnow($stime),3)."</b></font>年<br/>"; 
/* 
$output=sprintf(" 今天是第<font color=red><b>%03d</b></font>天<br/>今天是第< font color=red><b>%03d</b></font>周<br/>今天是第< font color=red><b>%03d</b></font>个月<br/>今天是第< font color=red><b>%03d</b></font>年<br/& gt;",daysofnow($stime),weeksofnow($stime),monthsofnow($stime),yearsofnow($stime)); 
echo $output; 
*/ 
 
function weeksofnow($stime) 
{ 
 $ftime=strtotime($stime); 
 $fweeks=date('w',$ftime); 
 if ($fweeks==0) $fweeks=7; 
 $nweeks=date('w'); 
 if ($nweeks==0) $nweeks=7; 
 $ftemp=strtotime(date('Y-m-d 00:00:00',$ftime))-$fweeks*60*60*24; 
 $ntemp=strtotime(date('Y-m-d 00:00:00',time()))+(7-$nweeks)*60*60*24; 
 //echo date('w',$ftemp)."<br/>....<br/>".date('w',$ntemp)."<br/>"; 
 return ($ntemp-$ftemp)/60/60/24/7; 
} 
 
function daysofnow($stime) 
{ 
 $ftime=strtotime($stime); 
 return ceil(abs((time()-$ftime)/(60*60*24))); 
} 
 
function monthsofnow($stime) 
{ 
 $ftime=strtotime($stime); 
 $fmonth=date('m',$ftime); 
 $fyear=date('Y',$ftime); 
 $nmonth=date('m'); 
 $nyear=date('Y'); 
 $result=($nyear-$fyear)*12+$nmonth-$fmonth+1; 
 return $result; 
} 
 
function yearsofnow($stime) 
{ 
 $ftime=strtotime($stime); 
 $fyear=date('Y',$ftime); 
 $nyear=date('Y'); 
 return $nyear-$fyear+1; 
} 
 
// 下面的函数只是加空格用的，不是核心内容，只为美观 
function Lnbsp($data,$num) 
{ 
 $result=trim($data); 
 for($i=$num;$i>=strlen($data);$i--) { 
 $result='&nbsp;'.$result; 
 } 
 return $result; 
} 
?> 

$tomorrow = date('Y-m-d',mktime (0,0,0,date("m"),date("d")+1,date("Y"))); 
$nextmonth = date('Y-m',mktime (0,0,0,date("m")+1,date("d")+1,date("Y"))); 
$nextyear = date('Y',mktime (0,0,0,date("m"),date("d"),date("Y")+1)); 
 
echo $tomorrow.'<br/>'; 
echo $nextmonth.'<br/>'; 
echo $nextyear.'<br/>'; 

<? 
$startDate="2001-12-12"; 
$endDate="2002-11-1"; 
 
$holidayArr=array("05-01","05-02","10-01","10-01","10-02","10-03","10-04","10-05","01-26","01-27","01-28","01-29"); 
 //假期日期数组，比方国庆,五一,春节等 
$endWeek=2; 
 //周末是否双休.双休为2，仅仅星期天休息为1，没有休息为0 
 
$beginUX=strtotime($startDate); 
$endUX=strtotime($endDate); 
 
for($n=$beginUX;$n<=$endUX;$n=$n+86400){ 
 $week=date("w",$n); 
 $MonDay=date("m-d",$n); 
 if($endWeek){//去处周末休息 
 if($endWeek==2){ 
 if($week==0||$week==6) continue; 
 } 
 if($endWeek==1){ 
 if($week==0) continue; 
 } 
 } 
 if(in_array($MonDay,$holidayArr)) continue; 
 $totalHour+=10;//每天工作10小时 
} 
echo "开始日期：$startDate<BR>"; 
echo "结束日期：$endDate<BR>"; 
echo "共花了".$totalHour."小时"; 
?> 

<?php 
function transform($sec){ 
 
 $output = ''; 
 
 $hours = floor($sec / 3600); 
 $remainSeconds = $sec % 3600; 
 
 $minutes = floor($remainSeconds / 60); 
 $seconds = $sec - $hours * 3600 - $minutes * 60; 
 
 if($sec >= 3600){ 
 $output .= $hours.' h / '; 
 $output .= $minutes.' m / '; 
 } 
 
 if($sec >= 60 && $sec < 3600){ 
 $output .= $minutes.' m / '; 
 } 
 
 return $output .= $seconds.' s '; 
} 
 
echo transform(3231803); 
 
?>