阳历到农历转换的一个PHP类

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<?php
//PHP阳历到农历转换的一个类
class Calendar
{
#农历每月的天数
    var $everyCMonth=array(
    0=>array(8,29,30,7,1),1=>array(0,8,2),2=>array(0,9,3),3=>array(5,10,4),4=>array(0,1,5),5=>array(0,2,6),6=>array(4,3,7),7=>array(0,4,8),8=>array(0,5,9),9=>array(2,6,10),10=>array(0,11),11=>array(6,12),12=>array(0,13=>array(0,14=>array(5,15=>array(0,16=>array(0,17=>array(2,18=>array(0,19=>array(7,20=>array(0,21=>array(0,22=>array(5,23=>array(0,24=>array(0,25=>array(4,26=>array(0,27=>array(0,28=>array(2,29=>array(0,30=>array(6,31=>array(0,32=>array(0,33=>array(5,34=>array(0,35=>array(0,36=>array(3,37=>array(0,38=>array(7,39=>array(0,40=>array(0,41=>array(6,42=>array(0,43=>array(0,44=>array(4,45=>array(0,46=>array(0,47=>array(2,48=>array(0,49=>array(7,50=>array(0,51=>array(0,52=>array(5,53=>array(0,54=>array(0,55=>array(3,56=>array(0,57=>array(8,58=>array(0,59=>array(0,60=>array(6,61=>array(0,62=>array(0,63=>array(4,64=>array(0,65=>array(0,66=>array(3,67=>array(0,68=>array(7,69=>array(0,70=>array(0,71=>array(5,72=>array(0,73=>array(0,74=>array(4,75=>array(0,76=>array(8,77=>array(0,78=>array(0,79=>array(6,80=>array(0,81=>array(0,82=>array(4,83=>array(0,84=>array(10,85=>array(0,86=>array(0,87=>array(6,88=>array(0,89=>array(0,90=>array(5,91=>array(0,92=>array(0,93=>array(3,94=>array(0,95=>array(8,96=>array(0,97=>array(0,98=>array(5,99=>array(0,100=>array(0,101=>array(4,102=>array(0,103=>array(0,104=>array(2,105=>array(0,106=>array(7,107=>array(0,108=>array(0,109=>array(5,110=>array(0,111=>array(0,112=>array(4,113=>array(0,114=>array(9,115=>array(0,116=>array(0,117=>array(6,118=>array(0,119=>array(0,120=>array(4,1)
    );
##############################
#农历天干
 
    var $mten=array("null","甲","乙","丙","丁","戊","己","庚","辛","壬","癸");    #农历地支
    var $mtwelve=array("null","子(鼠)","丑(牛)","寅(虎)","卯(兔)","辰(龙)","巳(蛇)","午(马)","未(羊)","申(猴)","酉(鸡)","戌(狗)","亥(猪)");    #农历月份
    var $mmonth=array("闰","正","二","三","四","五","六","七","八","九","十","十一","十二","月");
    var $mday=array("null","初一","初二","初三","初四","初五","初六","初七","初八","初九","初十","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");#农历日
##############################
#赋给初值
#天干地支
    var $ten=0;
    var $twelve=0;
    function MyPub($cYear,$cMonth,$cDay)
    {
        $total=11;#阳历总天数 至1900年12月21日   
        $mtotal=0;#阴历总天数
        for ($y=1901;$y<$cYear;$y++)
        {
            $total+=365;
            if ($y%4==0) $total ++;
        }
        #再加当年的几个月
        switch ($cMonth){
                 case 12:
                      $total+=30;
                 case 11:
                      $total+=31;
                 case 10:
                      $total+=30;
                 case 9:
                      $total+=31;
                 case 8:
                      $total+=31;
                 case 7:
                      $total+=30;
                 case 6:
                      $total+=31;
                 case 5:
                      $total+=30;
                 case 4:
                      $total+=31;
                 case 3:
                      $total+=28;
                 case 2:
                      $total+=31;
               }
 
            #如果当年是闰年还要加一天
            if ($cYear%4==0 and $cMonth>2)
            {
                $total++;
            }
 
            $total+=$cDay-1;
 
            ##############################
            #用农历的天数累加来判断是否超过阳历的天数
            for($j=0;$j<=120;$j++)
            {
                $i=1;
                for($i=1;$i<=13;$i++)
                {
                    $mtotal+=$this->everyCMonth[$j][$i];
                    if ($mtotal>=$total)
                    {
                        $flag=1;
                        break;
                    }
                }
                if ($flag==1)break;
            }
                    return array("m"=>$j,"d"=>$i,"t"=>$total,"n"=>$mtotal);
    }
    function Cal($Year,$Month,$Day)
    {
        $Par=$this->MyPub($Year,$Day);
 
        $md=$this->everyCMonth[$Par["m"]][$Par["d"]]-($Par["n"]-$Par["t"]);
        $week=($Par["t"]+5)%7;
        if ($this->everyCMonth[$Par["m"]][0]<>0 and $this->everyCMonth[$Par["m"]][0]<$Par["d"])
        {
                $mm=$Par["d"]-1;
        }else{
                $mm=$Par["d"];
        }
        if ($Par["d"]==$this->everyCMonth[$Par["d"]][0]+1 and $this->everyCMonth[$Par["d"]][0]<>0)
        {
            $cMonth=$this->mmonth[0].$this->mmonth[$mm];#闰月
        }else{
            $cMonth=$this->mmonth[$mm].$this->mmonth[13];
        }
        return array("year"=>$this->mten[$this->everyCMonth[$Par["m"]][14]].$this->mtwelve[$this->everyCMonth[$Par["m"]][15]],"month"=>$cMonth,"day"=>$this->mday[$md],"week"=>$week);
    }
}
/////调用
$test=new Calendar;
$Year=$test->Cal(2004,20);
echo $Year["year"]."年".$Year["month"].$Year["day"]."周".$Year["week"];
?>

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