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Copy pathgregorian_jalali.php
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gregorian_jalali.php
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<?php
/*
* @method gregorian_to_jalali ($g_y, $g_m, $g_d,$str) return gregorian to jalali converted date
* @method jalali_to_gregorian($j_y, $j_m, $j_d,$str) return jalali to gregorian converted date
*
* @author Roozbeh Baabakaan
* @version SVN: $Id: gregorian_jalali 1 2012-12-20 19:07:0
*/
function div($a,$b) {
return (int) ($a / $b);
}
function gregorian_to_jalali ($g_y, $g_m, $g_d,$str)
{
$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 = $j_day_no+1;
if($str) return $jy.'/'.$jm.'/'.$jd ;
return array($jy, $jm, $jd);
}
function jalali_to_gregorian($j_y, $j_m, $j_d,$str)
{
$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);
$jy = (int)($j_y)-979;
$jm = (int)($j_m)-1;
$jd = (int)($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 = $g_day_no+1;
if($str) return $gy.'/'.$gm.'/'.$gd ;
return array($gy, $gm, $gd);
}
function comparedate($_date_mix_jalaly,$_date_mix_gregorian)
{
$_date_arr_jalaly = explode('/', $_date_mix_jalaly);
$_date_arr_gregorian = explode('/', $_date_mix_gregorian);
$arr_jtg = jalali_to_gregorian($_date_arr_jalaly[0],$_date_arr_jalaly[1],$_date_arr_jalaly[2]);
if($_date_arr_gregorian[0]> $arr_jtg[0])
{
return false;
}
else if($_date_arr_gregorian[0]== $arr_jtg[0] && $_date_arr_gregorian[1]>$arr_jtg[1])
{
return false;
}
else if($_date_arr_gregorian[0]== $arr_jtg[0] && $_date_arr_gregorian[1]==$arr_jtg[1] && $_date_arr_gregorian[2]>$arr_jtg[2])
{
return false;
}
return true ;
}
?>