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PHP 實現公歷日期與農歷日期的互轉換

前言：

今天根據客戶的需求對時間進行了轉換，就是客戶要求增加農歷日期的顯示，在網上抄襲了一段，稍微修改了一下運行成功了，不難的，改動的很少的.

示例代碼：

<?php 
/*
 * 
 * 陳海波   新二級頁面 農歷轉換成公歷
 * 
 * */
// lunar.php   新建這個php文件，所有的代碼無需改，需要改的是下面teacher.php 的幾行
class Lunar
{ 
 private $_SMDay = array(1 => 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);//定義公歷月分天數 
 private $_LStart = 1950 ;//農歷從1950年開始 
 private $_LMDay = array( 
  //差：該年的農歷正月初一到該年公歷1月1日的天數；1~12：農歷月份天數；閏：如有閏月，記錄該月平月天數 
  //  差 1 2 3 4 5 6 7 8 9 10 11 12 閏 
  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 閏五月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 閏三月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 閏八月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 閏六月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 閏四月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 閏三月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 閏七月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 閏五月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 閏四月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 閏八月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 閏六月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 閏四月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 閏十月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 閏六月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 閏五月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 閏三月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 閏八月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 閏五月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 閏四月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 閏二月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 閏七月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 閏五月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 閏四月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 閏九月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 閏六月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 閏四月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 閏二月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 閏六月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 閏五月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 閏三月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 閏十一月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 閏六月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 閏五月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 閏二月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 閏七月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 閏五月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 閏三月30     
 ); 
  //是否閏年 
  private function IsLeapYear($AYear)
  { 
   return ($AYear % 4 == 0) && (($AYear % 100 != 0) || ($AYear % 400 == 0)); 
  } 
  //公歷該月的天數(year：年份； month：月份) 
  private function GetSMon($year,$month) 
  { 
    if($this->IsLeapYear($year) && $month == 2) 
       return 29; 
    else 
      return $this->_SMDay[$month]; 
  } 
   //農歷名稱轉換 
  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 $day; 
  } 
   //公歷轉農歷(Sdate：公歷日期) 
  public function S2L($date) 
  { 
    list($year, $month, $day) = explode("-", $date); 
    if($year <= 1951 || $month <= 0 || $day <= 0 || $year >= 2051 ) return false; 
     //獲取查詢日期到當年1月1日的天數 
    $date1 = strtotime($year."-01-01");//當年1月1日 
    $date2 = strtotime($year."-".$month."-".$day); 
    $days=round(($date2-$date1)/3600/24); 
    $days += 1; 
     //獲取相應年度農歷數據，化成數組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.="(閏)"; 
     //return $Ldate; 
   } 
   //農歷轉公歷(date：農歷日期； type：是否閏月) 
   public function L2S($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($Larray)<=12 ) return false;//要求查詢閏，但查無閏月 
     //如果查詢的農歷是閏月并該年度農歷數組存在閏月數據就獲取 
     if($Larray[$month]>30 && $type == 1 && count($Larray) >=13)  $day = $Larray[13] + $day; 
     //獲取該年農歷日期到公歷1月1日的天數 
     $days = $day; 
     for($i=0;$i<=$month-1;$i++) 
       $days += $Larray[$i]; 
    //當查詢農歷日期距離公歷1月1日超過一年時 
    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; 
   } 
 } 
?>

teacher.php

  //公歷轉農歷 
 require_once(CORE_."Lunar.php");  // 加載lunar.php文件
 $today = date("Y-m-d"); 
 $lunar = new Lunar();       // 實例化類
 $nonglitime = array();
 $nl = date("Y-n-d",$lunar->S2L($today));  
 echo $nl;exit;  // 轉為農歷是:2012-05-25

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