/*------------------------------------------------------------------------------------------*/
public function jalali_to_gregorian($input) {//تبدیل شمسی به میلادی
$date_array = explode("/",$input);
//print_r($date_array);
$j_y = $date_array[0];
$j_m = $date_array[1];
$j_d = $date_array[2];
$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 + $this->div($jy, 33)*8 + $this->div($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;
$gy = 1600 + 400*$this->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--;
$gy += 100*$this->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;
}
$gy += 4*$this->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 += $this->div($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 $gy.'-'.$gm.'-'.$gd;
//return array($gy, $gm, $gd);
}
/*------------------------------------------------------------------------------------------*/
