IranPHP.net - First Persian PHP Resource

تابع های تبدیل تاریخ شمسی به میلادی و برعکس


<?php
// 
            \"jalali.php\" is convertor to and from Gregorian and Jalali 
            calendars. 
// Copyright (C) 2000  Roozbeh Pournader 
            and Mohammad Toossi 
// 
// This program is free software; you 
            can redistribute it and/or 
// modify it under the terms of the 
            GNU General Public License 
// as published by the Free Software 
            Foundation; either version 2 
// of the License, or (at your 
            option) any later version. 
// 
// This program is distributed 
            in the hope that it will be useful, 
// but WITHOUT ANY WARRANTY; 
            without even the implied warranty of 
// MERCHANTABILITY or 
            FITNESS FOR A PARTICULAR PURPOSE.  See the 
// GNU 
            General Public License for more details. 
// 
// A copy of the 
            GNU General Public License is available from: 
// 
            
//    http://www.gnu.org/copyleft/gpl.html 
            
// 


function div($a,$b) 
            {
    return (int) ($a / $b);
}

function 
            gregorian_to_jalali ($g_y, $g_m, $g_d) 
{
    $g_days_in_month = 
            array(31, 
            28, 
            31, 
            30, 
            31, 
            30, 
            31, 
            31, 
            30, 
            31, 
            30, 
            31); 
            
    $j_days_in_month = 
            array(31, 
            31, 
            31, 
            31, 
            31, 
            31, 
            30, 
            30, 
            30, 
            30, 
            30, 
            29);     
    


   

   $gy = $g_y-1600; 
            
   $gm = $g_m-1; 
   $gd 
            = $g_d-1; 
            

   $g_day_no 
            = 365*$gy+div($gy+3,4)-div($gy+99,100)+div($gy+399,400); 
            

   for ($i=0; $i < $gm; ++$i) 
            
      $g_day_no += $g_days_in_month[$i]; 
   if ($gm>1 && (($gy%4==0 && $gy%100!=0) || ($gy%400==0))) 
            
      /* leap and after Feb */ 
            
      $g_day_no++; 
            
   $g_day_no 
            += $gd; 
            

   $j_day_no 
            = $g_day_no-79; 
            

   $j_np 
            = div($j_day_no, 12053); /* 12053 = 365*33 + 32/4 */ 
            
   $j_day_no 
            = $j_day_no 
            % 12053; 
            

   $jy 
            = 979+33*$j_np+4*div($j_day_no,1461); /* 1461 = 365*4 + 4/4 */ 
            

   $j_day_no 
            %= 1461; 
            

   if ($j_day_no 
            >= 366) { 
            
      $jy += div($j_day_no-1, 365); 
            
      $j_day_no = ($j_day_no-1)%365; 
            
   } 

   for ($i = 0; $i < 11 && $j_day_no >= 
            $j_days_in_month[$i]; ++$i) 
      $j_day_no -= $j_days_in_month[$i]; 
   $jm = $i+1; 
            
   $jd = $j_day_no+1; 

   return array($jy, $jm, $jd); 
} 
            

function jalali_to_gregorian($j_y, $j_m, $j_d) 
{ 
    $g_days_in_month = 
            array(31, 
            28, 
            31, 
            30, 
            31, 
            30, 
            31, 
            31, 
            30, 
            31, 
            30, 
            31); 
            
    $j_days_in_month = 
            array(31, 
            31, 
            31, 
            31, 
            31, 
            31, 
            30, 
            30, 
            30, 
            30, 
            30, 
            29);
    
   

   $jy = $j_y-979; 
            
   $jm = $j_m-1; 
   $jd 
            = $j_d-1; 
            

   $j_day_no 
            = 365*$jy + div($jy, 33)*8 + div($jy%33+3, 4); 
            
   for ($i=0; $i < $jm; ++$i) 
      $j_day_no += $j_days_in_month[$i]; 

   $j_day_no += $jd; 
            

   $g_day_no 
            = $j_day_no+79; 
            

   $gy 
            = 1600 
            + 400*div($g_day_no, 146097); /* 146097 = 365*400 + 400/4 - 400/100 + 400/400 */ 
            
   $g_day_no 
            = $g_day_no 
            % 146097; 
            

   $leap 
            = true; 
            
   if ($g_day_no 
            >= 36525) /* 36525 = 365*100 + 100/4 */ 
            
   { 
            
      $g_day_no--; 
            
      $gy += 100*div($g_day_no,  36524); /* 36524 = 365*100 + 100/4 - 100/100 */ 
            
      $g_day_no = $g_day_no % 36524; 
            

      if ($g_day_no >= 
            365) 
            
         $g_day_no++; 
            
      else 
            
         $leap = false; 
            
   } 

   $gy += 4*div($g_day_no, 1461); /* 1461 = 365*4 + 4/4 */ 
            
   $g_day_no 
            %= 1461; 
            

   if ($g_day_no 
            >= 366) { 
            
      $leap = false; 
            

      $g_day_no--; 
            
      $gy += div($g_day_no, 365); 
            
      $g_day_no = $g_day_no % 365; 
            
   } 

   for ($i = 0; $g_day_no >= 
            $g_days_in_month[$i] + ($i == 1 && $leap); $i++) 
            
      $g_day_no -= $g_days_in_month[$i] + ($i == 1 && $leap); 
            
   $gm = $i+1; 
   $gd 
            = $g_day_no+1; 
            

   return array($gy, $gm, $gd); 
            
}





?>
بازگشت به صفحه اصلی مقالات
[ باز گشت به نمونه برنامه ها | بازگشت به صفحه اصلی مقالات |
]

صفحه اول انجمن ها مقالات پرسشهای همه گانی دریافت فایل لینک ها پروژه ها