最近對陽歷轉陰歷從而得到相應節日的算法這方面比較感興趣，於是就在網上搜了一圈。不錯，還算是找到一個比較不錯的php類，實現了將陽歷轉換為陰歷（農歷），陰歷轉換為陽歷的算法，同時還能獲取干支紀年，生肖，以及相應的陰歷的中文叫法等等，功能還是挺齊全的，在這裡分享給大家。
具體類代碼如下：
class Lunar{
var $MIN_YEAR=1891;
var $MAX_YEAR=2100;
var $lunarInfo=array(
array(0,2,9,21936),array(6,1,30,9656),array(0,2,17,9584),array(0,2,6,21168),array(5,1,26,43344),array(0,2,13,59728),
array(0,2,2,27296),array(3,1,22,44368),array(0,2,10,43856),array(8,1,30,19304),array(0,2,19,19168),array(0,2,8,42352),
array(5,1,29,21096),array(0,2,16,53856),array(0,2,4,55632),array(4,1,25,27304),array(0,2,13,22176),array(0,2,2,39632),
array(2,1,22,19176),array(0,2,10,19168),array(6,1,30,42200),array(0,2,18,42192),array(0,2,6,53840),array(5,1,26,54568),
array(0,2,14,46400),array(0,2,3,54944),array(2,1,23,38608),array(0,2,11,38320),array(7,2,1,18872),array(0,2,20,18800),
array(0,2,8,42160),array(5,1,28,45656),array(0,2,16,27216),array(0,2,5,27968),array(4,1,24,44456),array(0,2,13,11104),
array(0,2,2,38256),array(2,1,23,18808),array(0,2,10,18800),array(6,1,30,25776),array(0,2,17,54432),array(0,2,6,59984),
array(5,1,26,27976),array(0,2,14,23248),array(0,2,4,11104),array(3,1,24,37744),array(0,2,11,37600),array(7,1,31,51560),
array(0,2,19,51536),array(0,2,8,54432),array(6,1,27,55888),array(0,2,15,46416),array(0,2,5,22176),array(4,1,25,43736),
array(0,2,13,9680),array(0,2,2,37584),array(2,1,22,51544),array(0,2,10,43344),array(7,1,29,46248),array(0,2,17,27808),
array(0,2,6,46416),array(5,1,27,21928),array(0,2,14,19872),array(0,2,3,42416),array(3,1,24,21176),array(0,2,12,21168),
array(8,1,31,43344),array(0,2,18,59728),array(0,2,8,27296),array(6,1,28,44368),array(0,2,15,43856),array(0,2,5,19296),
array(4,1,25,42352),array(0,2,13,42352),array(0,2,2,21088),array(3,1,21,59696),array(0,2,9,55632),array(7,1,30,23208),
array(0,2,17,22176),array(0,2,6,38608),array(5,1,27,19176),array(0,2,15,19152),array(0,2,3,42192),array(4,1,23,53864),
array(0,2,11,53840),array(8,1,31,54568),array(0,2,18,46400),array(0,2,7,46752),array(6,1,28,38608),array(0,2,16,38320),
array(0,2,5,18864),array(4,1,25,42168),array(0,2,13,42160),array(10,2,2,45656),array(0,2,20,27216),array(0,2,9,27968),
array(6,1,29,44448),array(0,2,17,43872),array(0,2,6,38256),array(5,1,27,18808),array(0,2,15,18800),array(0,2,4,25776),
array(3,1,23,27216),array(0,2,10,59984),array(8,1,31,27432),array(0,2,19,23232),array(0,2,7,43872),array(5,1,28,37736),
array(0,2,16,37600),array(0,2,5,51552),array(4,1,24,54440),array(0,2,12,54432),array(0,2,1,55888),array(2,1,22,23208),
array(0,2,9,22176),array(7,1,29,43736),array(0,2,18,9680),array(0,2,7,37584),array(5,1,26,51544),array(0,2,14,43344),
array(0,2,3,46240),array(4,1,23,46416),array(0,2,10,44368),array(9,1,31,21928),array(0,2,19,19360),array(0,2,8,42416),
array(6,1,28,21176),array(0,2,16,21168),array(0,2,5,43312),array(4,1,25,29864),array(0,2,12,27296),array(0,2,1,44368),
array(2,1,22,19880),array(0,2,10,19296),array(6,1,29,42352),array(0,2,17,42208),array(0,2,6,53856),array(5,1,26,59696),
array(0,2,13,54576),array(0,2,3,23200),array(3,1,23,27472),array(0,2,11,38608),array(11,1,31,19176),array(0,2,19,19152),
array(0,2,8,42192),array(6,1,28,53848),array(0,2,15,53840),array(0,2,4,54560),array(5,1,24,55968),array(0,2,12,46496),
array(0,2,1,22224),array(2,1,22,19160),array(0,2,10,18864),array(7,1,30,42168),array(0,2,17,42160),array(0,2,6,43600),
array(5,1,26,46376),array(0,2,14,27936),array(0,2,2,44448),array(3,1,23,21936),array(0,2,11,37744),array(8,2,1,18808),
array(0,2,19,18800),array(0,2,8,25776),array(6,1,28,27216),array(0,2,15,59984),array(0,2,4,27424),array(4,1,24,43872),
array(0,2,12,43744),array(0,2,2,37600),array(3,1,21,51568),array(0,2,9,51552),array(7,1,29,54440),array(0,2,17,54432),
array(0,2,5,55888),array(5,1,26,23208),array(0,2,14,22176),array(0,2,3,42704),array(4,1,23,21224),array(0,2,11,21200),
array(8,1,31,43352),array(0,2,19,43344),array(0,2,7,46240),array(6,1,27,46416),array(0,2,15,44368),array(0,2,5,21920),
array(4,1,24,42448),array(0,2,12,42416),array(0,2,2,21168),array(3,1,22,43320),array(0,2,9,26928),array(7,1,29,29336),
array(0,2,17,27296),array(0,2,6,44368),array(5,1,26,19880),array(0,2,14,19296),array(0,2,3,42352),array(4,1,24,21104),
array(0,2,10,53856),array(8,1,30,59696),array(0,2,18,54560),array(0,2,7,55968),array(6,1,27,27472),array(0,2,15,22224),
array(0,2,5,19168),array(4,1,25,42216),array(0,2,12,42192),array(0,2,1,53584),array(2,1,21,55592),array(0,2,9,54560)
);
/**
* 將陽歷轉換為陰歷
* @param year 公歷-年
* @param month 公歷-月
* @param date 公歷-日
*/
function convertSolarToLunar($year,$month,$date){//debugger;
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
if($year==$this->MIN_YEAR&&$month<=2&&$date<=9){
return array(1891,'正月','初一','辛卯',1,1,'兔');
}
return $this->getLunarByBetween($year,$this->getDaysBetweenSolar($year,$month,$date,$yearData[1],$yearData[2]));
}
function convertSolarMonthToLunar($year,$month){
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
if($year==$this->MIN_YEAR&&$month<=2&&$date<=9){
return array(1891,'正月','初一','辛卯',1,1,'兔');
}
$month_days_ary=array(31,28,31,30,31,30,31,31,30,31,30,31);
$dd=$month_days_ary[$month];
if($this->isLeapYear($year)&& $month==2)$dd++;
$lunar_ary=array();
for ($i=1;$i<$dd;$i++){
$array=$this->getLunarByBetween($year,$this->getDaysBetweenSolar($year,$month,$i,$yearData[1],$yearData[2]));
$array[]=$year.'-'.$month.'-'.$i;
$lunar_ary[$i]=$array;
}
return $lunar_ary;
}
/**
* 將陰歷轉換為陽歷
* @param year 陰歷-年
* @param month 陰歷-月，閏月處理：例如如果當年閏五月，那麼第二個五月就傳六月，相當於陰歷有13個月，只是有的時候第13個月的天數為0
* @param date 陰歷-日
*/
function convertLunarToSolar($year,$month,$date){
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
$between=$this->getDaysBetweenLunar($year,$month,$date);
$res=mktime(0,0,0,$yearData[1],$yearData[2],$year);
$res=date('Y-m-d',$res+$between*24*60*60);
$day=explode('-',$res);
$year=$day[0];
$month=$day[1];
$day=$day[2];
return array($year,$month,$day);
}
/**
* 判斷是否是閏年
* @param year
*/
function isLeapYear($year){
return (($year%4==0&&$year%100!=0)||($year%400==0));
}
/**
* 獲取干支紀年
* @param year
*/
function getLunarYearName($year){
$sky=array('庚','辛','壬','癸','甲','乙','丙','丁','戊','己');
$earth=array('申','酉','戌','亥','子','丑','寅','卯','辰','巳','午','未');
$year=$year.'';
return $sky[$year{3}].$earth[$year%12];
}
/**
* 根據陰歷年獲取生肖
* @param year 陰歷年
*/
function getYearZodiac($year){
$zodiac=array('猴','雞','狗','豬','鼠','牛','虎','兔','龍','蛇','馬','羊');
return $zodiac[$year%12];
}
/**
* 獲取陽歷月份的天數
* @param year 陽歷-年
* @param month 陽歷-月
*/
function getSolarMonthDays($year,$month){
$monthHash=array('1'=>31,'2'=>$this->isLeapYear($year)?29:28,'3'=>31,'4'=>30,'5'=>31,'6'=>30,'7'=>31,'8'=>31,'9'=>30,'10'=>31,'11'=>30,'12'=>31);
return $monthHash["$month"];
}
/**
* 獲取陰歷月份的天數
* @param year 陰歷-年
* @param month 陰歷-月，從一月開始
*/
function getLunarMonthDays($year,$month){
$monthData=$this->getLunarMonths($year);
return $monthData[$month-1];
}
/**
* 獲取陰歷每月的天數的數組
* @param year
*/
function getLunarMonths($year){
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
$leapMonth=$yearData[0];
$bit=decbin($yearData[3]);
for ($i=0;$i<strlen($bit);$i ++){
$bitArray[$i]=substr($bit,$i,1);
}
for($k=0,$klen=16-count($bitArray);$k<$klen;$k++){
array_unshift($bitArray,'0');
}
$bitArray=array_slice($bitArray,0,($leapMonth==0?12:13));
for($i=0;$i<count($bitArray);$i++){
$bitArray[$i]=$bitArray[$i] + 29;
}
return $bitArray;
}
/**
* 獲取農歷每年的天數
* @param year 農歷年份
*/
function getLunarYearDays($year){
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
$monthArray=$this->getLunarYearMonths($year);
$len=count($monthArray);
return ($monthArray[$len-1]==0?$monthArray[$len-2]:$monthArray[$len-1]);
}
function getLunarYearMonths($year){//debugger;
$monthData=$this->getLunarMonths($year);
$res=array();
$temp=0;
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
$len=($yearData[0]==0?12:13);
for($i=0;$i<$len;$i++){
$temp=0;
for($j=0;$j<=$i;$j++){
$temp+=$monthData[$j];
}
array_push($res,$temp);
}
return $res;
}
/**
* 獲取閏月
* @param year 陰歷年份
*/
function getLeapMonth($year){
$yearData=$this->lunarInfo[$year-$this->MIN_YEAR];
return $yearData[0];
}
/**
* 計算陰歷日期與正月初一相隔的天數
* @param year
* @param month
* @param date
*/
function getDaysBetweenLunar($year,$month,$date){
$yearMonth=$this->getLunarMonths($year);
$res=0;
for($i=1;$i<$month;$i++){
$res+=$yearMonth[$i-1];
}
$res+=$date-1;
return $res;
}
/**
* 計算2個陽歷日期之間的天數
* @param year 陽歷年
* @param cmonth
* @param cdate
* @param dmonth 陰歷正月對應的陽歷月份
* @param ddate 陰歷初一對應的陽歷天數
*/
function getDaysBetweenSolar($year,$cmonth,$cdate,$dmonth,$ddate){
$a=mktime(0,0,0,$cmonth,$cdate,$year);
$b=mktime(0,0,0,$dmonth,$ddate,$year);
return ceil(($a-$b)/24/3600);
}
/**
* 根據距離正月初一的天數計算陰歷日期
* @param year 陽歷年
* @param between 天數
*/
function getLunarByBetween($year,$between){//debugger;
$lunarArray=array();
$yearMonth=array();
$t=0;
$e=0;
$leapMonth=0;
$m='';
if($between==0){
array_push($lunarArray,$year,'正月','初一');
$t=1;
$e=1;
}else{
$year=$between>0? $year : ($year-1);
$yearMonth=$this->getLunarYearMonths($year);
$leapMonth=$this->getLeapMonth($year);
$between=$between>0?$between : ($this->getLunarYearDays($year)+$between);
for($i=0;$i<13;$i++){
if($between==$yearMonth[$i]){
$t=$i+2;
$e=1;
break;
}else if($between<$yearMonth[$i]){
$t=$i+1;
$e=$between-(empty($yearMonth[$i-1])?0:$yearMonth[$i-1])+1;
break;
}
}
$m=($leapMonth!=0&&$t==$leapMonth+1)?('閏'.$this->getCapitalNum($t- 1,true)):$this->getCapitalNum(($leapMonth!=0&&$leapMonth+1<$t?($t-1):$t),true);
array_push($lunarArray,$year,$m,$this->getCapitalNum($e,false));
}
array_push($lunarArray,$this->getLunarYearName($year));// 天干地支
array_push($lunarArray,$t,$e);
array_push($lunarArray,$this->getYearZodiac($year));// 12生肖
array_push($lunarArray,$leapMonth);// 閏幾月
return $lunarArray;
}
/**
* 獲取數字的陰歷叫法
* @param num 數字
* @param isMonth 是否是月份的數字
*/
function getCapitalNum($num,$isMonth){
$isMonth=$isMonth||false;
$dateHash=array('0'=>'','1'=>'一','2'=>'二','3'=>'三','4'=>'四','5'=>'五','6'=>'六','7'=>'七','8'=>'八','9'=>'九','10'=>'十 ');
$monthHash=array('0'=>'','1'=>'正月','2'=>'二月','3'=>'三月','4'=>'四月','5'=>'五月','6'=>'六月','7'=>'七月','8'=>'八月','9'=>'九月','10'=>'十月','11'=>'冬月','12'=>'臘月');
$res='';
if($isMonth){
$res=$monthHash[$num];
}else{
if($num<=10){
$res='初'.$dateHash[$num];
}else if($num>10&&$num<20){
$res='十'.$dateHash[$num-10];
}else if($num==20){
$res="二十";
}else if($num>20&&$num<30){
$res="廿".$dateHash[$num-20];
}else if($num==30){
$res="三十";
}
}
return $res;
}
}
使用方法如下：
<?php
header("Content-Type:text/html;charset=utf-8");
$lunar=new Lunar();
$month=$lunar->convertSolarToLunar(2013,07,08);//將陽歷轉換為陰歷
echo '<pre>';
print_r($month);
打印結果如下：
Array
(
[0] => 2013
[1] => 五月
[2] => 三十
[3] => 癸巳
[4] => 5
[5] => 30
[6] => 蛇
[7] => 0
)
