php 计算两个日期之间的间隔天数
本文章来给各位同学详细介绍关于php 计算两个日期这间的间隔天数实例,各位同学可参考,我们一般是把日期用strtotime转换,然后再进行算,这样可以精确到时分秒。
例1,直接把日期转换,代码如下:
- function daysbetweendates($date1, $date2){
- $date1 = strtotime($date1);
- $date2 = strtotime($date2);
- $days = ceil(abs($date1 - $date2)/86400);
- return $days;
- }
例2,代码如下:
- <?php
- functionmaketime($date)
- {
- list($year,$month,$day) = explode('-',$date);
- returnmktime(0,0,0,$month,$day,$year);
- }
- $date1 = '2007-01-08';
- $date2 = '2007-03-01';
- $d = (maketime($date2) - maketime($date1)) / (3600*24);
- echo'相差$d 天';
- ?>
例3,PHP实现两个日期间隔的年、月、周、日数的计算,代码如下:
- <?php
- function format($a,$b){
-
- if(strtotime($a)>strtotime($b)) list($a,$b)=array($b,$a);
- $start = strtotime($a);
- $stop = strtotime($b);
- $extend = ($stop-$start)/86400;
- $result['extends'] = $extend;
- if($extend<7){
- $result['daily'] = $extend;
- }elseif($extend<=31){
- if($stop==strtotime($a.'+1 month')){
- $result['monthly'] = 1;
- }else{
- $w = floor($extend/7);
- $d = ($stop-strtotime($a.'+'.$w.' week'))/86400;
- $result['weekly'] = $w;
- $result['daily'] = $d;
- }
- }else{
- $y= floor($extend/365);
- if($y>=1){
- $start = strtotime($a.'+'.$y.'year');
- $a = date('Y-m-d',$start);
-
- if($start>$stop){
- $a = date('Y-m-d',strtotime($a.'-1 month'));
- $m =11;
- $y--;
- }
- $extend = ($stop-strtotime($a))/86400;
- }
- if(isset($m)){
- $w = floor($extend/7);
- $d = $extend-$w*7;
- }else{
- $m = isset($m)?$m:round($extend/30);
- $stop>=strtotime($a.'+'.$m.'month')?$m:$m--;
- if($stop>=strtotime($a.'+'.$m.'month')){
- $d=$w=($stop-strtotime($a.'+'.$m.'month'))/86400;
- $w = floor($w/7);
- $d = $d-$w*7;
- }
- }
- $result['yearly'] = $y;
- $result['monthly'] = $m;
- $result['weekly'] = $w;
- $result['daily'] = isset($d)?$d:null;
- }
- return array_filter($result);
- }
-
- print_r(format('2012-10-1','2012-12-15'));
- ?>