Solar calendar to lunar calendar function

1, Design idea:

#To calculate which day of the lunar calendar a given time is, we need to find a reference time, Then use this reference time to calculate future times. First, calculate the number of days difference between the current time and the reference time, then by finding the number of days in each year of the lunar calendar, calculate which day of the year the current time corresponds to, and finally calculate which date belongs to that month.

2, create a new Convert.class.php file;

Encapsulate the conversion function, the code is as follows:

header("Content-type:text/html;charset=utf-8");
class Convert{
private $animals=array("鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪");
private $curData=null;//当前阳历时间
private $ylYeal=0;
private $ylMonth=0;
private $yldate=0;
private $ylDays=0; //当前日期是农历年的第多少天
private $leap=0;//代表润哪一个月
private $leapDays=0;//代表闰月的天数
private $difmonth=0;//当前时间距离参考时间相差多少月
private $difDay=0;//当前时间距离参考时间相差多少天
private $tianGan=array("甲","乙","丙","丁","戊","己","庚","辛","壬","癸");
private $diZhi=array("子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥");
private $dataInfo=array(0x04bd8,0x04ae0,0x0a570,0x054d5,0x0d260,0x0d950,0x16554,0x056a0,0x09ad0,0x055d2,//1900-1909
0x04ae0,0x0a5b6,0x0a4d0,0x0d250,0x1d255,0x0b540,0x0d6a0,0x0ada2,0x095b0,0x14977,//1910-1919
0x04970,0x0a4b0,0x0b4b5,0x06a50,0x06d40,0x1ab54,0x02b60,0x09570,0x052f2,0x04970,//1920-1929
0x06566,0x0d4a0,0x0ea50,0x06e95,0x05ad0,0x02b60,0x186e3,0x092e0,0x1c8d7,0x0c950,//1930-1939
0x0d4a0,0x1d8a6,0x0b550,0x056a0,0x1a5b4,0x025d0,0x092d0,0x0d2b2,0x0a950,0x0b557,//1940-1949
0x06ca0,0x0b550,0x15355,0x04da0,0x0a5b0,0x14573,0x052b0,0x0a9a8,0x0e950,0x06aa0,//1950-1959
0x0aea6,0x0ab50,0x04b60,0x0aae4,0x0a570,0x05260,0x0f263,0x0d950,0x05b57,0x056a0,//1960-1969
0x096d0,0x04dd5,0x04ad0,0x0a4d0,0x0d4d4,0x0d250,0x0d558,0x0b540,0x0b6a0,0x195a6,//1970-1979
0x095b0,0x049b0,0x0a974,0x0a4b0,0x0b27a,0x06a50,0x06d40,0x0af46,0x0ab60,0x09570,//1980-1989
0x04af5,0x04970,0x064b0,0x074a3,0x0ea50,0x06b58,0x055c0,0x0ab60,0x096d5,0x092e0,//1990-1999
0x0c960,0x0d954,0x0d4a0,0x0da50,0x07552,0x056a0,0x0abb7,0x025d0,0x092d0,0x0cab5,//2000-2009
0x0a950,0x0b4a0,0x0baa4,0x0ad50,0x055d9,0x04ba0,0x0a5b0,0x15176,0x052b0,0x0a930,//2010-2019
0x07954,0x06aa0,0x0ad50,0x05b52,0x04b60,0x0a6e6,0x0a4e0,0x0d260,0x0ea65,0x0d530,//2020-2029
0x05aa0,0x076a3,0x096d0,0x04bd7,0x04ad0,0x0a4d0,0x1d0b6,0x0d250,0x0d520,0x0dd45,//2030-2039
0x0b5a0,0x056d0,0x055b2,0x049b0,0x0a577,0x0a4b0,0x0aa50,0x1b255,0x06d20,0x0ada0,//2040-2049
/**Add By JJonline@JJonline.Cn**/
0x14b63,0x09370,0x049f8,0x04970,0x064b0,0x168a6,0x0ea50, 0x06b20,0x1a6c4,0x0aae0,//2050-2059
0x0a2e0,0x0d2e3,0x0c960,0x0d557,0x0d4a0,0x0da50,0x05d55,0x056a0,0x0a6d0,0x055d4,//2060-2069
0x052d0,0x0a9b8,0x0a950,0x0b4a0,0x0b6a6,0x0ad50,0x055a0,0x0aba4,0x0a5b0,0x052b0,//2070-2079
0x0b273,0x06930,0x07337,0x06aa0,0x0ad50,0x14b55,0x04b60,0x0a570,0x054e4,0x0d160,//2080-2089
0x0e968,0x0d520,0x0daa0,0x16aa6,0x056d0,0x04ae0,0x0a9d4,0x0a2d0,0x0d150,0x0f252,//2090-2099
0x0d520);
public function __construct($curData=null){
if(!empty($curData)){
$this->curData=$curData;
}else{
$this->curData=date('Y-n-j');
}
$this->init();
}
public function init(){
$basedate='1900-2-1';//参照日期
$timezone='PRC';
$datetime= new DateTime($basedate, new DateTimeZone($timezone));
$curTime=new DateTime($this->curData, new DateTimeZone($timezone));
$offset = ($curTime->format('U') - $datetime->format('U'))/86400; //相差的天数
$offset=ceil($offset);
$this->difDay=$offset;
$offset+=1;//只能使用ceil，不能使用intval或者是floor,因为1900-1-31为正月初一，故需要加1
for($i=1900; $i<2050 && $offset>0; $i++){
$temp = $this->getYearDays($i); //计算i年有多少天
$offset -= $temp ;
$this->difmonth+=12;
//判断该年否存在闰月
if($this->leapMonth($i)>0){
$this->difmonth+=1;
}
}
if($offset<0){
$offset += $temp;
$i--;
$this->difmonth-=12;
}
if($this->leapMonth($i)>0){
$this->difmonth-=1;
}
$this->ylDays=$offset;
//此时$offset代表是农历该年的第多少天
$this->ylYeal=$i;//农历哪一年
//计算月份，依次减去1~12月份的天数，直到offset小于下个月的天数
$curMonthDays=$this->monthDays($this->ylYeal,1);
//判断是否该年是否存在闰月以及闰月的天数
$this->leap=$this->leapMonth($this->ylYeal);
if($this->leap !=0){
$this->leapDays=$this->leapDays($this->ylYeal);
}
for($i=1;$i<13 && $curMonthDays<$offset;$curMonthDays=$this->monthDays($this->ylYeal,++$i)){
if($this->leap == $i){ //闰月
if($offset>$this->leapDays){
--$i;
$offset-=$this->leapDays;
$this->difmonth+=1;
}else{
break;
}
}else{
$offset-=$curMonthDays;
$this->difmonth+=1;
}
}
$this->ylMonth=$i;
$this->yldate=$offset;
}
/**
*计算农历y年有多少天
**/
public function getYearDays($y){
$sum = 348;//12*29=348,不考虑小月的情况下
for($i=0x8000; $i>=0x10; $i>>=1){
$sum += ($this->dataInfo[$y-1900] & $i)? 1: 0;
}
return($sum+$this->leapDays($y));
}
/**
*获取某一年闰月的天数
**/
public function leapDays($y){
if($this->leapMonth($y)){
return(($this->dataInfo[$y-1900] & 0x10000)? 30: 29);
} else {
return(0);
}
}
/**
*计算哪一月为闰月
*/
public function leapMonth($y){
return ($this->dataInfo[$y-1900] & 0xf);
}
/**
*计算农历y年m月有多少天
*/
public function monthDays($y,$m){
return (($this->dataInfo[$y-1900] & (0x10000>>$m))? 30: 29 );
}
public function getLyTime(){
$tmp=array('初','一','二','三','四','五','六','七','八','九','十','廿');
$dateStr='';
if($this->ylMonth>10){
$m2=intval($this->ylMonth -10); //十位
$dateStr='十'.$tmp[$m2].'月';
}elseif($this->ylMonth==1){
$dateStr='正月';
}else{
$dateStr=$tmp[$this->ylMonth].'月';
}
if($this->yldate <11){
$dateStr.='初'.$tmp[$this->yldate];
}else{
$m1=intval($this->yldate / 10);
if( $m1 !=3){
$dateStr.=($m1==1)?'十':'廿';
$m2=$this->yldate % 10;
if($m2==0){
$dateStr.='十';
}else{
$dateStr.=$tmp[$m2];
}
}else{
$dateStr.='三十';
}
}
return $dateStr;
}
/**
*获取该年对于的天干地支年
**/
public function getYGanZhi(){
$gan=$this->tianGan[($this->ylYeal-4) % 10];
$zhi=$this->diZhi[($this->ylYeal-4) % 12];
return $gan.$zhi.'年';
}
/**
*获取该年对于的天干地支月
**/
public function getMGanZhi(){
$gan=$this->tianGan[($this->difmonth+3) % 10];
$zhi=$this->diZhi[($this->difmonth+1) % 12];
return $gan.$zhi.'月';
}
/**
*获取该年对于的天干地支日
**/
public function getDGanZhi(){
$gan=$this->tianGan[$this->difDay % 10];
$zhi=$this->diZhi[($this->difDay+4) % 12];
return $gan.$zhi.'日';
}
}

Modify calendar.php code:

Add new get request:

echo "< ;th onmouseOver='overTh(this)' onmouseOut='outTh(this)'>{$d}";

Call the encapsulation class:

$convert=isset($_GET["convert"])?$_GET["convert"]:date("Y-m-d");
if($convert!=''){
$c=new Convert($convert);
$time=$c->getLyTime();
// echo $convert.'对应的农历时间：'.$time;
}
echo "";
echo "
$convert 对应的农历时间：$time
";

The operation effect is as follows: