原文：http://www.oschina.net/code/snippet_54698_3836
PHP农历公历转换
代码：
PHP农历公历转换
代码：
<?php if (! defined('BASEPATH')) exit('Access Denied!');
/*
云南省曲靖师范学院计算机科学与工程学院-杨海熙编写
2009-9-3
农历公历转换
*/
class Lunar {
private $_SMDay = array(1 => 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);//定义公历月分天数
private $_LStart = 1950 ;//农历从1950年开始
private $_LMDay = array(
//差：该年的农历正月初一到该年公历1月1日的天数；1~12：农历月份天数；闰：如有闰月，记录该月平月天数
// 差 1 2 3 4 5 6 7 8 9 10 11 12 闰
array(47,29,30,30,29,30,30,29,29,30,29,30,29),
array(36,30,29,30,30,29,30,29,30,29,30,29,30),
array(6,29,30,29,30,59,29,30,30,29,30,29,30,29), //五月29 闰五月30
array(44,29,30,29,29,30,30,29,30,30,29,30,29),
array(33,30,29,30,29,29,30,29,30,30,29,30,30),
array(23,29,30,59,29,29,30,29,30,29,30,30,30,29), //三月29 闰三月30
array(42,29,30,29,30,29,29,30,29,30,29,30,30),
array(30,30,29,30,29,30,29,29,59,30,29,30,29,30), //八月30 闰八月29
array(48,30,30,30,29,30,29,29,30,29,30,29,30),
array(38,29,30,30,29,30,29,30,29,30,29,30,29),
array(27,30,29,30,29,30,59,30,29,30,29,30,29,30), //六月30 闰六月29
array(45,30,29,30,29,30,29,30,30,29,30,29,30),
array(35,29,30,29,29,30,29,30,30,29,30,30,29),
array(24,30,29,30,58,30,29,30,29,30,30,30,29,29), //四月29 闰四月29
array(43,30,29,30,29,29,30,29,30,29,30,30,30),
array(32,29,30,29,30,29,29,30,29,29,30,30,29),
array(20,30,30,59,30,29,29,30,29,29,30,30,29,30), //三月30 闰三月29
array(39,30,30,29,30,30,29,29,30,29,30,29,30),
array(29,29,30,29,30,30,29,59,30,29,30,29,30,30), //七月30 闰七月29
array(47,29,30,29,30,29,30,30,29,30,29,30,29),
array(36,30,29,29,30,29,30,30,29,30,30,29,30),
array(26,29,30,29,29,59,30,29,30,30,30,29,30,30), //五月30 闰五月29
array(45,29,30,29,29,30,29,30,29,30,30,29,30),
array(33,30,29,30,29,29,30,29,29,30,30,29,30),
array(22,30,30,29,59,29,30,29,29,30,30,29,30,30), //四月30 闰四月29
array(41,30,30,29,30,29,29,30,29,29,30,29,30),
array(30,30,30,29,30,29,30,29,59,29,30,29,30,30), //八月30 闰八月29
array(48,30,29,30,30,29,30,29,30,29,30,29,29),
array(37,30,29,30,30,29,30,30,29,30,29,30,29),
array(27,30,29,29,30,29,60,29,30,30,29,30,29,30), //六月30 闰六月30
array(46,30,29,29,30,29,30,29,30,30,29,30,30),
array(35,29,30,29,29,30,29,29,30,30,29,30,30),
array(24,30,29,30,58,30,29,29,30,29,30,30,30,29), //四月29 闰四月29
array(43,30,29,30,29,29,30,29,29,30,29,30,30),
array(32,30,29,30,30,29,29,30,29,29,59,30,30,30), //十月30 闰十月29
array(50,29,30,30,29,30,29,30,29,29,30,29,30),
array(39,29,30,30,29,30,30,29,30,29,30,29,29),
array(28,30,29,30,29,30,59,30,30,29,30,29,29,30), //六月30 闰六月29
array(47,30,29,30,29,30,29,30,30,29,30,30,29),
array(36,30,29,29,30,29,30,29,30,29,30,30,30),
array(26,29,30,29,29,59,29,30,29,30,30,30,30,30), //五月30 闰五月29
array(45,29,30,29,29,30,29,29,30,29,30,30,30),
array(34,29,30,30,29,29,30,29,29,30,29,30,30),
array(22,29,30,59,30,29,30,29,29,30,29,30,29,30), //三月30 闰三月29
array(40,30,30,30,29,30,29,30,29,29,30,29,30),
array(30,29,30,30,29,30,29,30,59,29,30,29,30,30), //八月30 闰八月29
array(49,29,30,29,30,30,29,30,29,30,30,29,29),
array(37,30,29,30,29,30,29,30,30,29,30,30,29),
array(27,30,29,29,30,58,30,30,29,30,30,29,30,29), //五月29 闰五月29
array(46,30,29,29,30,29,29,30,29,30,30,30,29),
array(35,30,30,29,29,30,29,29,30,29,30,30,29),
array(23,30,30,29,59,30,29,29,30,29,30,29,30,30), //四月30 闰四月29
array(42,30,30,29,30,29,30,29,29,30,29,30,29),
array(31,30,30,29,30,30,29,30,29,29,30,29,30),
array(21,29,59,30,30,29,30,29,30,29,30,29,30,30), //二月30 闰二月29
array(39,29,30,29,30,29,30,30,29,30,29,30,29),
array(28,30,29,30,29,30,29,59,30,30,29,30,30,30), //七月30 闰七月29
array(48,29,29,30,29,29,30,29,30,30,30,29,30),
array(37,30,29,29,30,29,29,30,29,30,30,29,30),
array(25,30,30,29,29,59,29,30,29,30,29,30,30,30), //五月30 闰五月29
array(44,30,29,30,29,30,29,29,30,29,30,29,30),
array(33,30,29,30,30,29,30,29,29,30,29,30,29),
array(22,30,29,30,59,30,29,30,29,30,29,30,29,30), //四月30 闰四月29
array(40,30,29,30,29,30,30,29,30,29,30,29,30),
array(30,29,30,29,30,29,30,29,30,59,30,29,30,30), //九月30 闰九月29
array(49,29,30,29,29,30,29,30,30,30,29,30,29),
array(38,30,29,30,29,29,30,29,30,30,29,30,30),
array(27,29,30,29,30,29,59,29,30,29,30,30,30,29), //六月29 闰六月30
array(46,29,30,29,30,29,29,30,29,30,29,30,30),
array(35,30,29,30,29,30,29,29,30,29,29,30,30),
array(24,29,30,30,59,30,29,29,30,29,30,29,30,30), //四月30 闰四月29
array(42,29,30,30,29,30,29,30,29,30,29,30,29),
array(31,30,29,30,29,30,30,29,30,29,30,29,30),
array(21,29,59,29,30,30,29,30,30,29,30,29,30,30), //二月30 闰二月29
array(40,29,30,29,29,30,29,30,30,29,30,30,29),
array(28,30,29,30,29,29,59,30,29,30,30,30,29,30), //六月30 闰六月29
array(47,30,29,30,29,29,30,29,29,30,30,30,29),
array(36,30,30,29,30,29,29,30,29,29,30,30,29),
array(25,30,30,30,29,59,29,30,29,29,30,30,29,30), //五月30 闰五月29
array(43,30,30,29,30,29,30,29,30,29,29,30,30),
array(33,29,30,29,30,30,29,30,29,30,29,30,29),
array(22,29,30,59,30,29,30,30,29,30,29,30,29,30), //三月30 闰三月29
array(41,30,29,29,30,29,30,30,29,30,30,29,30),
array(30,29,30,29,29,30,29,30,29,30,30,59,30,30), //十一月30 闰十一月29
array(49,29,30,29,29,30,29,30,29,30,30,29,30),
array(38,30,29,30,29,29,30,29,29,30,30,29,30),
array(27,30,30,29,30,29,59,29,29,30,29,30,30,29), //六月29 闰六月30
array(45,30,30,29,30,29,29,30,29,29,30,29,30),
array(34,30,30,29,30,29,30,29,30,29,29,30,29),
array(23,30,30,29,30,59,30,29,30,29,30,29,29,30), //五月30 闰五月29
array(42,30,29,30,30,29,30,29,30,30,29,30,29),
array(31,29,30,29,30,29,30,30,29,30,30,29,30),
array(21,29,59,29,30,29,30,29,30,30,29,30,30,30), //二月30 闰二月29
array(40,29,30,29,29,30,29,29,30,30,29,30,30),
array(29,30,29,30,29,29,30,58,30,29,30,30,30,29), //七月29 闰七月29
array(47,30,29,30,29,29,30,29,29,30,29,30,30),
array(36,30,29,30,29,30,29,30,29,29,30,29,30),
array(25,30,29,30,30,59,29,30,29,29,30,29,30,29), //五月29 闰五月30
array(44,29,30,30,29,30,30,29,30,29,29,30,29),
array(32,30,29,30,29,30,30,29,30,30,29,30,29),
array(22,29,30,59,29,30,29,30,30,29,30,30,29,29), //三月29 闰三月30
);
//是否闰年
private function IsLeapYear($AYear){
return ($AYear % 4 == 0) && (($AYear % 100 != 0) || ($AYear % 400 == 0));
}
//公历该月的天数(year：年份； month：月份)
private function GetSMon($year,$month)
{
if($this->IsLeapYear($year) && $month == 2)
return 29;
else
return $this->_SMDay[$month];
}
//农历名称转换
private function LYearName($year)
{
$Name = array("零","一","二","三","四","五","六","七","八","九");
for($i=0;$i<4;$i++)
for($k=0;$k<10;$k++)
if($year[$i]==$k)
$tmp.=$Name[$k];
return $tmp;
}
private function LMonName($month)
{
if($month >=1 && $month <=12 )
{
$Name = array( 1=>"正","二","三","四","五","六","七","八","九","十","十一","十二");
return $Name[$month];
}
return $month;
}
private function LDayName($day)
{
if($day >=1 && $day <=30 )
{
$Name = array( 1 =>
"初一","初二","初三","初四","初五","初六","初七","初八","初九","初十",
"十一","十二","十三","十四","十五","十六","十七","十八","十九","二十",
"廿一","廿二","廿三","廿四","廿五","廿六","廿七","廿八","廿九","三十"
);
return $Name[$day];
}
return $day;
}
//公历转农历(Sdate：公历日期)
public function S2L($date)
{
list($year, $month, $day) = explode("-", $date);
if($year <= 1951 || $month <= 0 || $day <= 0 || $year >= 2051 ) return false;
//获取查询日期到当年1月1日的天数
$date1 = strtotime($year."-01-01");//当年1月1日
$date2 = strtotime($year."-".$month."-".$day);
$days=round(($date2-$date1)/3600/24);
$days += 1;
//获取相应年度农历数据，化成数组Larray
$Larray = $this->_LMDay[$year - $this->_LStart];
if($days <= $Larray[0])
{
$Lyear = $year - 1;
$days = $Larray[0] - $days;
$Larray = $this->_LMDay[$Lyear - $this->_LStart];
if($days < $Larray[12])
{
$Lmonth = 12;
$Lday = $Larray[12] - $days;
}
else
{
$Lmonth = 11;
$days = $days - $Larray[12];
$Lday = $Larray[11] - $days;
}
}
else
{
$Lyear = $year;
$days = $days - $Larray[0];
for($i = 1;$i <= 12;$i++)
{
if($days > $Larray[$i]) $days = $days - $Larray[$i];
else
{
if ($days > 30){
$days = $days - $Larray[13];
$Ltype = 1;
}
$Lmonth = $i;
$Lday = $days;
break;
}
}
}
return mktime(0, 0, 0, $Lmonth, $Lday, $Lyear);
//$Ldate = $Lyear."-".$Lmonth."-".$Lday;
//$Ldate = $this->LYearName($Lyear)."年".$this->LMonName($Lmonth)."月".$this->LDayName($Lday);
//if($Ltype) $Ldate.="(闰)";
//return $Ldate;
}
//农历转公历(date：农历日期； type：是否闰月)
public function L2S($date,$type = 0)
{
list($year, $month, $day) = split("-",$date);
if($year <= 1951 || $month <= 0 || $day <= 0 || $year >= 2051 ) return false;
$Larray = $this->_LMDay[$year - $this->_LStart];
if($type == 1 && count($Larray)<=12 ) return false;//要求查询闰，但查无闰月
//如果查询的农历是闰月并该年度农历数组存在闰月数据就获取
if($Larray[$month] > 30 && $type == 1 && count($Larray) >= 13) $day = $Larray[13] + $day;
//获取该年农历日期到公历1月1日的天数
$days = $day;
for($i=0;$i<=$month-1;$i++)
$days += $Larray[$i];
//当查询农历日期距离公历1月1日超过一年时
if($days > 366 || ($this->GetSMon($month,2)!=29 && $days>365 ))
{
$Syear = $year +1;
if($this->GetSMon($month,2)!=29)
$days-=366;
else
$days-=365;
if($days > $this->_SMDay[1])
{
$Smonth = 2;
$Sday = $days - $this->_SMDay[1];
}
else
{
$Smonth = 1;
$Sday = $days;
}
}
else
{
$Syear =$year;
for($i=1;$i<=12;$i++)
{
if($days > $this->GetSMon($Syear,$i))
$days-=$this->GetSMon($Syear,$i);
else
{
$Smonth = $i;
$Sday = $days;
break;
}
}
}
return mktime(0, 0, 0, $Smonth, $Sday, $Syear);
//$Sdate = $Syear."-".$Smonth."-".$Sday;
//return $Sdate;
}
}使用方法：<?php
require_once 'Lunar.php';
$today = date("Y-m-d");
$lunar = new Lunar();
//公历转农历
$nl = date("Y-m-d",$lunar->S2L($today));
//农历转公历
$gl = date("Y-m-d",$lunar->L2S($nl));
echo "今天公历是:$today<br/>";
echo "转为农历是:$nl<br/>";
echo "转回公历是:$gl<br/>";
?>
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