參考資料 : https://gist.github.com/jfcherng/4eb9c81c95b42a1b9f188a7f70f4e420
<?php
class Lunar
{
const MIN_YEAR = 1891;
const MAX_YEAR = 2100;
const LUNAR_INFO = [
[0, 2, 9, 21936], [6, 1, 30, 9656], [0, 2, 17, 9584], [0, 2, 6, 21168], [5, 1, 26, 43344], [0, 2, 13, 59728],
[0, 2, 2, 27296], [3, 1, 22, 44368], [0, 2, 10, 43856], [8, 1, 30, 19304], [0, 2, 19, 19168], [0, 2, 8, 42352],
[5, 1, 29, 21096], [0, 2, 16, 53856], [0, 2, 4, 55632], [4, 1, 25, 27304], [0, 2, 13, 22176], [0, 2, 2, 39632],
[2, 1, 22, 19176], [0, 2, 10, 19168], [6, 1, 30, 42200], [0, 2, 18, 42192], [0, 2, 6, 53840], [5, 1, 26, 54568],
[0, 2, 14, 46400], [0, 2, 3, 54944], [2, 1, 23, 38608], [0, 2, 11, 38320], [7, 2, 1, 18872], [0, 2, 20, 18800],
[0, 2, 8, 42160], [5, 1, 28, 45656], [0, 2, 16, 27216], [0, 2, 5, 27968], [4, 1, 24, 44456], [0, 2, 13, 11104],
[0, 2, 2, 38256], [2, 1, 23, 18808], [0, 2, 10, 18800], [6, 1, 30, 25776], [0, 2, 17, 54432], [0, 2, 6, 59984],
[5, 1, 26, 27976], [0, 2, 14, 23248], [0, 2, 4, 11104], [3, 1, 24, 37744], [0, 2, 11, 37600], [7, 1, 31, 51560],
[0, 2, 19, 51536], [0, 2, 8, 54432], [6, 1, 27, 55888], [0, 2, 15, 46416], [0, 2, 5, 22176], [4, 1, 25, 43736],
[0, 2, 13, 9680], [0, 2, 2, 37584], [2, 1, 22, 51544], [0, 2, 10, 43344], [7, 1, 29, 46248], [0, 2, 17, 27808],
[0, 2, 6, 46416], [5, 1, 27, 21928], [0, 2, 14, 19872], [0, 2, 3, 42416], [3, 1, 24, 21176], [0, 2, 12, 21168],
[8, 1, 31, 43344], [0, 2, 18, 59728], [0, 2, 8, 27296], [6, 1, 28, 44368], [0, 2, 15, 43856], [0, 2, 5, 19296],
[4, 1, 25, 42352], [0, 2, 13, 42352], [0, 2, 2, 21088], [3, 1, 21, 59696], [0, 2, 9, 55632], [7, 1, 30, 23208],
[0, 2, 17, 22176], [0, 2, 6, 38608], [5, 1, 27, 19176], [0, 2, 15, 19152], [0, 2, 3, 42192], [4, 1, 23, 53864],
[0, 2, 11, 53840], [8, 1, 31, 54568], [0, 2, 18, 46400], [0, 2, 7, 46752], [6, 1, 28, 38608], [0, 2, 16, 38320],
[0, 2, 5, 18864], [4, 1, 25, 42168], [0, 2, 13, 42160], [10, 2, 2, 45656], [0, 2, 20, 27216], [0, 2, 9, 27968],
[6, 1, 29, 44448], [0, 2, 17, 43872], [0, 2, 6, 38256], [5, 1, 27, 18808], [0, 2, 15, 18800], [0, 2, 4, 25776],
[3, 1, 23, 27216], [0, 2, 10, 59984], [8, 1, 31, 27432], [0, 2, 19, 23232], [0, 2, 7, 43872], [5, 1, 28, 37736],
[0, 2, 16, 37600], [0, 2, 5, 51552], [4, 1, 24, 54440], [0, 2, 12, 54432], [0, 2, 1, 55888], [2, 1, 22, 23208],
[0, 2, 9, 22176], [7, 1, 29, 43736], [0, 2, 18, 9680], [0, 2, 7, 37584], [5, 1, 26, 51544], [0, 2, 14, 43344],
[0, 2, 3, 46240], [4, 1, 23, 46416], [0, 2, 10, 44368], [9, 1, 31, 21928], [0, 2, 19, 19360], [0, 2, 8, 42416],
[6, 1, 28, 21176], [0, 2, 16, 21168], [0, 2, 5, 43312], [4, 1, 25, 29864], [0, 2, 12, 27296], [0, 2, 1, 44368],
[2, 1, 22, 19880], [0, 2, 10, 19296], [6, 1, 29, 42352], [0, 2, 17, 42208], [0, 2, 6, 53856], [5, 1, 26, 59696],
[0, 2, 13, 54576], [0, 2, 3, 23200], [3, 1, 23, 27472], [0, 2, 11, 38608], [11, 1, 31, 19176], [0, 2, 19, 19152],
[0, 2, 8, 42192], [6, 1, 28, 53848], [0, 2, 15, 53840], [0, 2, 4, 54560], [5, 1, 24, 55968], [0, 2, 12, 46496],
[0, 2, 1, 22224], [2, 1, 22, 19160], [0, 2, 10, 18864], [7, 1, 30, 42168], [0, 2, 17, 42160], [0, 2, 6, 43600],
[5, 1, 26, 46376], [0, 2, 14, 27936], [0, 2, 2, 44448], [3, 1, 23, 21936], [0, 2, 11, 37744], [8, 2, 1, 18808],
[0, 2, 19, 18800], [0, 2, 8, 25776], [6, 1, 28, 27216], [0, 2, 15, 59984], [0, 2, 4, 27424], [4, 1, 24, 43872],
[0, 2, 12, 43744], [0, 2, 2, 37600], [3, 1, 21, 51568], [0, 2, 9, 51552], [7, 1, 29, 54440], [0, 2, 17, 54432],
[0, 2, 5, 55888], [5, 1, 26, 23208], [0, 2, 14, 22176], [0, 2, 3, 42704], [4, 1, 23, 21224], [0, 2, 11, 21200],
[8, 1, 31, 43352], [0, 2, 19, 43344], [0, 2, 7, 46240], [6, 1, 27, 46416], [0, 2, 15, 44368], [0, 2, 5, 21920],
[4, 1, 24, 42448], [0, 2, 12, 42416], [0, 2, 2, 21168], [3, 1, 22, 43320], [0, 2, 9, 26928], [7, 1, 29, 29336],
[0, 2, 17, 27296], [0, 2, 6, 44368], [5, 1, 26, 19880], [0, 2, 14, 19296], [0, 2, 3, 42352], [4, 1, 24, 21104],
[0, 2, 10, 53856], [8, 1, 30, 59696], [0, 2, 18, 54560], [0, 2, 7, 55968], [6, 1, 27, 27472], [0, 2, 15, 22224],
[0, 2, 5, 19168], [4, 1, 25, 42216], [0, 2, 12, 42192], [0, 2, 1, 53584], [2, 1, 21, 55592], [0, 2, 9, 54560],
];
const SKY = [
'庚', '辛', '壬', '癸',
'甲', '乙', '丙', '丁',
'戊', '己',
];
const EARTH = [
'申', '酉', '戌', '亥',
'子', '丑', '寅', '卯',
'辰', '巳', '午', '未',
];
const ZODIAC = [
'猴', '雞', '狗', '豬', '鼠', '牛',
'虎', '兔', '龍', '蛇', '馬', '羊',
];
const DATE_HASH = [
'',
'一', '二', '三', '四', '五',
'六', '七', '八', '九', '十',
];
const MONTH_HASH = [
'',
'正月', '二月', '三月', '四月', '五月', '六月',
'七月', '八月', '九月', '十月', '冬月', '臘月',
];
const MONTH_DAYS = [
31, -1, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31,
];
/**
* 將陽曆轉換為陰曆.
*
* @param int $year 公曆-年
* @param int $month 公曆-月
* @param int $date 公曆-日
*
* @return array
*/
public function convertSolarToLunar(int $year, int $month, int $date): array
{
//debugger;
$yearData = static::LUNAR_INFO[$year - static::MIN_YEAR];
if ($year === static::MIN_YEAR && $month <= 2 && $date <= 9) {
return [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(int $year, int $month): array
{
$yearData = static::LUNAR_INFO[$year - static::MIN_YEAR];
$dd = $this->getSolarMonthDays($year, $month);
if ($this->isLeapYear($year) && $month === 2) {
++$dd;
}
$lunar_ary = [];
for ($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;
}
/**
* 將陰曆轉換為陽曆.
*
* @param int $year 陰曆-年
* @param int $month 陰曆-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，相當於陰曆有13個月，只是有的時候第13個月的天數為0
* @param int $date 陰曆-日
*
* @return array
*/
public function convertLunarToSolar(int $year, int $month, int $date): array
{
$yearData = static::LUNAR_INFO[$year - static::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);
return explode('-', $res);
}
/**
* 判斷是否是閏年.
*
* @param int $year The year
*
* @return bool true if leap year, False otherwise
*/
public function isLeapYear(int $year): bool
{
return ($year & 3 === 0 && $year % 100 !== 0) || ($year % 400 === 0);
}
/**
* 獲取干支紀年.
*
* @param int $year The year
*
* @return string the lunar year name
*/
public function getLunarYearName(int $year): string
{
return static::SKY[$year % 10] . static::EARTH[$year % 12];
}
/**
* 根據陰曆年獲取生肖.
*
* @param int $year 陰曆年
*
* @return array the year zodiac
*/
public function getYearZodiac(int $year): string
{
return static::ZODIAC[$year % 12];
}
/**
* 獲取陽曆月份的天數.
*
* @param int $year 陽曆-年
* @param int $month 陽曆-月
*
* @return int the solar month days
*/
public function getSolarMonthDays(int $year, int $month): int
{
return $month === 2
? ($this->isLeapYear($year) ? 29 : 28)
: static::MONTH_DAYS[$month];
}
/**
* 獲取陰曆月份的天數.
*
* @param int $year 陰曆-年
* @param int $month 陰曆-月，從一月開始
*
* @return int the lunar month days
*/
public function getLunarMonthDays(int $year, int $month): int
{
return $this->getLunarMonths($year)[$month - 1];
}
/**
* 獲取陰曆每月的天數的數組.
*
* @param int $year The year
*
* @return array the lunar months
*/
public function getLunarMonths(int $year): array
{
$yearData = static::LUNAR_INFO[$year - static::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;
}
/**
* 獲取農曆每年的天數.
*
* @param int $year 農曆年份
*
* @return int the lunar year days
*/
public function getLunarYearDays(int $year): int
{
$monthArray = $this->getLunarYearMonths($year);
$len = count($monthArray);
return $monthArray[$len - 1] === 0 ? $monthArray[$len - 2] : $monthArray[$len - 1];
}
/**
* 獲取農曆每年的月數.
*
* @param int $year The year
*
* @return array the lunar year months
*/
public function getLunarYearMonths(int $year): array
{
//debugger
$monthData = $this->getLunarMonths($year);
$res = [];
$temp = 0;
$yearData = static::LUNAR_INFO[$year - static::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];
}
$res[] = $temp;
}
return $res;
}
/**
* 獲取閏月.
*
* @param int $year 陰曆年份
*
* @return int the leap month
*/
public function getLeapMonth(int $year): int
{
return static::LUNAR_INFO[$year - static::MIN_YEAR][0];
}
/**
* 計算陰曆日期與正月初一相隔的天數.
*
* @param int $year The year
* @param int $month The month
* @param int $date The date
*
* @return int the days between lunar
*/
public function getDaysBetweenLunar(int $year, int $month, int $date): int
{
$yearMonth = $this->getLunarMonths($year);
$res = 0;
for ($i = 1; $i < $month; ++$i) {
$res += $yearMonth[$i - 1];
}
$res += $date - 1;
return $res;
}
/**
* 計算2個陽曆日期之間的天數.
*
* @param int $year 陽曆年
* @param int $cmonth The cmonth
* @param int $cdate The cdate
* @param int $dmonth 陰曆正月對應的陽曆月份
* @param int $ddate 陰曆初一對應的陽曆天數
*
* @return int the days between solar
*/
public function getDaysBetweenSolar(int $year, int $cmonth, int $cdate, int $dmonth, int $ddate): int
{
$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曆日期
*
* @param int $year 陽曆年
* @param int $between 天數
*
* @return array the lunar by between
*/
public function getLunarByBetween(int $year, int $between): array
{
// debugger
$lunarArray = [];
$yearMonth = [];
$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;
$e = 1;
break;
}
if ($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
$t,
$e,
$this->getYearZodiac($year), // 生肖
$leapMonth // 閏幾月
);
return $lunarArray;
}
/**
* 獲取數字的陰曆叫法.
*
* @param int $num 數字
* @param bool $isMonth 是否是月份的數字
*
* @return string the capital number
*/
public function getCapitalNum(int $num, bool $isMonth = false): string
{
if ($isMonth) {
return static::MONTH_HASH[$num];
}
if ($num <= 10) {
$res = '初' . static::DATE_HASH[$num];
} elseif ($num < 20) {
$res = '十' . static::DATE_HASH[$num - 10];
} elseif ($num === 20) {
$res = '二十';
} elseif ($num < 30) {
$res = '廿' . static::DATE_HASH[$num - 20];
} elseif ($num === 30) {
$res = '三十';
} else {
$res = '';
}
return $res;
}
}
function demo() {
$lunar = new Lunar();
$month = $lunar->convertSolarToLunar(2018, 1, 2);
print_r($month);
}
// demo();