<?php
/**
* @author: hirry
* @email: ljhynlp@
* @time: -06-05
* @words: 获取从今天开始退回的第n个工作日的日期
*/
//定义当前时间
define("TODAY",date("Y-m-d"));
//定义要获取第几个工作日的日期
define("NUMDAY",'5');
//计算出第5天的时间
$fifthday = get_num_date(TODAY, NUMDAY);
//获取第5个工作日
echo "第5个工作日期是：";
echo get_fifth_work_date(TODAY, $fifthday);
//计算第n天的日期
function get_num_date($startDate, $numDate){
return date("Y-m-d", strtotime($startDate) + $numDate*3600*24);
}
//计算第5个工作日期
function get_fifth_work_date($toDay, $endday){
$num = check_work_day_num($toDay, $endday);
if($num==5){
echo $endday;
}else{
$endday2 = get_num_date(TODAY, NUMDAY+(NUMDAY-$num));
get_fifth_work_date($toDay, $endday2);
}
}
//计算工作日函数
function check_work_day_num($toDay, $endday){
$starttime = $toDay;
$endtime = $endday;
$starttime=date("z",mktime(0,0,0,substr($starttime,5,2),substr($starttime,8,2),substr($starttime,0,4))); $endtime=date("z",mktime(0,0,0,substr($endtime,5,2),substr($endtime,8,2),substr($endtime,0,4)));
$alltime=$endtime-$starttime+1;
//节假日的日期数据,目前按照年份配置就可以了
$ordainrest[""] = "05-01&3|&&|06-10&3|&&|10-01&5";
$ordainrest[""] = "05-01&3|&&|06-10&3|&&|10-01&5";
//计算去掉节假日的天数
$tmpa=explode("|&&|",$ordainrest[date("Y")]);
for($Tmpb=0;$Tmpb<count($tmpa);$Tmpb++){
$tmpc=explode("&",$tmpa[$Tmpb]);
$tmpsize=date("z",mktime(0,0,0,substr($tmpc[0],0,2),substr($tmpc[0],3,2),date("Y")));
if($tmpsize>=$starttime && $tmpsize<=$endtime){
$alltime=$alltime-$tmpc[1];
//从总的工作日中去掉法定日期
}
}
//计算去掉周末的天数
$weekdaynum = get_weekend_days($toDay, $endday);
$work_day_num = $alltime-($weekdaynum-1);
return $work_day_num;
}
//获取周末天数
function get_weekend_days($start_date,$end_date,$is_workday = false){
if (strtotime($start_date) > strtotime($end_date)) list($start_date, $end_date) = array($end_date, $start_date);
$start_reduce = $end_add = 0;
$start_N = date('N',strtotime($start_date));
$start_reduce = ($start_N == 7) ? 1 : 0;
$end_N = date('N',strtotime($end_date));
in_array($end_N,array(6,7)) & $end_add = ($end_N == 7) ? 2 : 1;
$alldays = abs(strtotime($end_date) - strtotime($start_date))/86400 + 1;
$weekend_days = floor(($alldays + $start_N - 1 - $end_N) / 7) * 2 - $start_reduce + $end_add;
if ($is_workday){
$workday_days = $alldays - $weekend_days;
return $workday_days;
}
return $weekend_days;
}
