PHP應用
<?php
/**
 * Class Lunar
 * 農歷 節氣 節日
 * author:guoyu@xzd
 */
class Lunar
{
  public $MIN_YEAR = 1891;
  public $MAX_YEAR = 2100;
  public $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
   */
  public function convertSolarToLunar($year,$month,$date)
  {
    $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]));
  }
  public function convertSolarMonthToLunar($year,$month,$date)
  {
    $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 $lunar_ary;
  }
  /**
   * 將陰歷轉換為陽歷
   * @param year 陰歷-年
   * @param month 陰歷-月,閏月處理：例如如果當年閏五月,那么第二個五月就傳六月,相當于陰歷有13個月,只是有的時候第13個月的天數為0
   * @param date 陰歷-日
   */
  public function convertLunarToSolar($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, $day);
  }
  /**
   * 判斷是否是閏年
   * @param year
   */
  public function isLeapYear($year)
  {
    return (($year%4==0 && $year%100 !=0) || ($year%400==0));
  }
  /**
   * 獲取干支紀年
   * @param year
   */
  public 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
   */
  public 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
   */
  public 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
   */
  public 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
   */
  public 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 $bitArray;
  }
  /**
   * 獲取農歷每年的天數
   * @param year 農歷年份
   */
  public function getLunarYearDays($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]);
  }
  public function getLunarYearMonths($year)
  {
    $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 $res;
  }
  /**
   * 獲取閏月
   * @param year 陰歷年份
   */
  public function getLeapMonth($year)
  {
    $yearData = $this->lunarInfo[$year-$this->MIN_YEAR];
    return $yearData[0];
  }
  /**
   * 計算陰歷日期與正月初一相隔的天數
   * @param year
   * @param month
   * @param date
   */
  public function getDaysBetweenLunar($year,$month,$date)
  {
    $yearMonth = $this->getLunarMonths($year);
    $res=0;
    for($i=1;$i<$month;$i++) $res +=$yearMonth[$i-1];
    $res+=$date-1;
    return $res;
  }
  /**
   * 計算2個陽歷日期之間的天數
   * @param year 陽歷年
   * @param cmonth
   * @param cdate
   * @param dmonth 陰歷正月對應的陽歷月份
   * @param ddate 陰歷初一對應的陽歷天數
   */
  public function getDaysBetweenSolar($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
   */
  public function getLunarByBetween($year,$between)
  {
    $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 $lunarArray;
  }
  /**
   * 獲取數字的陰歷叫法
   * @param num 數字
   * @param isMonth 是否是月份的數字
   */
  public function getCapitalNum($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 $res;
  }
  /**
   * 節氣通用算法
   */
  public function getJieQi($_year,$month,$day)
  {
    $year = substr($_year,-2)+0;
    $coefficient = array(
      array(5.4055,2019,-1),//小寒
      array(20.12,2082,1),//大寒
      array(3.87),//立春
      array(18.74,2026,-1),//雨水
      array(5.63),//驚蟄
      array(20.646,2084,1),//春分
      array(4.81),//清明
      array(20.1),//谷雨
      array(5.52,1911,1),//立夏
      array(21.04,2008,1),//小滿
      array(5.678,1902,1),//芒種
      array(21.37,1928,1),//夏至
      array(7.108,2016,1),//小暑
      array(22.83,1922,1),//大暑
      array(7.5,2002,1),//立秋
      array(23.13),//處暑
      array(7.646,1927,1),//白露
      array(23.042,1942,1),//秋分
      array(8.318),//寒露
      array(23.438,2089,1),//霜降
      array(7.438,2089,1),//立冬
      array(22.36,1978,1),//小雪
      array(7.18,1954,1),//大雪
      array(21.94,2021,-1)//冬至
    );
    $term_name = array(
      "小寒","大寒","立春","雨水","驚蟄","春分","清明","谷雨",
      "立夏","小滿","芒種","夏至","小暑","大暑","立秋","處暑",
      "白露","秋分","寒露","霜降","立冬","小雪","大雪","冬至");
    $idx1 = ($month-1)*2;
    $_leap_value = floor(($year-1)/4);
    $day1 = floor($year*0.2422+$coefficient[$idx1][0])-$_leap_value;
    if(isset($coefficient[$idx1][1])&&$coefficient[$idx1][1]==$_year) $day1 += $coefficient[$idx1][2];
    $day2 = floor($year*0.2422+$coefficient[$idx1+1][0])-$_leap_value;
    if(isset($coefficient[$idx1+1][1])&&$coefficient[$idx1+1][1]==$_year) $day1 += $coefficient[$idx1+1][2];
    if($day==$day1) return $term_name[$idx1];
    if($day==$day2) return $term_name[$idx1+1];
    return '';
  }
  /**
   * 獲取節日：特殊的節日只能修改此函數來計算
   */
  public function getFestival($today, $nl_info = false,$config = 1)
  {
    if($config == 1)
    {
      $arr_lunar=array('01-01'=>'春節','01-15'=>'元宵節','02-02'=>'二月二','05-05'=>'端午節','07-07'=>'七夕節','08-15'=>'中秋節','09-09'=>'重陽節','12-08'=>'臘八節','12-23'=>'小年');
      $arr_solar=array('01-01'=>'元旦','02-14'=>'情人節','03-12'=>'植樹節','04-01'=>'愚人節','05-01'=>'勞動節','06-01'=>'兒童節','10-01'=>'國慶節','10-31'=>'萬圣節','12-24'=>'平安夜','12-25'=>'圣誕節');
    }//需要不同節日的,用不同的$config,然后配置$arr_lunar和$arr_solar
    $festivals = array();
    list($y,$m,$d) = explode('-',$today);
    if(!$nl_info) $nl_info = $this->convertSolarToLunar($y,intval($m),intval($d));
    if($nl_info[7]>0&&$nl_info[7]<$nl_info[4]) $nl_info[4]-=1;
    $md_lunar = substr('0'.$nl_info[4],-2).'-'.substr('0'.$nl_info[5],-2);
    $md_solar=substr_replace($today,'',0,5);
    isset($arr_lunar[$md_lunar])?array_push($festivals, $arr_lunar[$md_lunar]):'';
    isset($arr_solar[$md_solar])?array_push($festivals, $arr_solar[$md_solar]):'';
    $glweek = date("w",strtotime($today));  //0-6
    if($m==5&&($d>7)&&($d<15)&&($glweek==0))array_push($festivals, "母親節");
    if($m==6&&($d>14)&&($d<22)&&($glweek==0))array_push($festivals,"父親節");
    $jieqi = $this->getJieQi($y,$m,$d);
    if($jieqi)array_push($festivals,$jieqi);
    return implode('/',$festivals);
  }
}

PHP應用
$lunar = new Lunar();
$month = $lunar->convertSolarToLunar(date('Y'),date('m'),date('d'));
print_r($month);

PHP應用
Array
(
  [0] => 2017
  [1] => 閏六月
  [2] => 十七
  [3] => 丁酉
  [4] => 7
  [5] => 17
  [6] => 雞
  [7] => 6
)