function calendar_jalali_convert in Calendar Systems 6.2

Jalali calendar date converter callback.

Converts Gregorian to Jalali.

Parameters

$year: Gregorian year.

$month: Gregorian month.

$day: Gregorian day.

Return value

An array of Jalali date elements.

• year: Jalali year.
• month: Jalali month.
• day: Jalali day.

1 call to calendar_jalali_convert()

calendar_jalali_formatter in calendars/calendar_jalali/calendar_jalali.module

Jalali calendar date formatter callback.

1 string reference to 'calendar_jalali_convert'

calendar_jalali_calendar_info in calendars/calendar_jalali/calendar_jalali.module

Implements hook_calendar_info().

File

calendars/calendar_jalali/calendar_jalali.module, line 125

Implements necessary hooks & helpers to support Jalali Calendar.

Code

function calendar_jalali_convert($year, $month, $day) {
  $day = $day - 1;
  $month = $month - 1;
  $year = $year - 1600;
  $jmonth_days = calendar_jalali_month_days();
  $gmonth_days = calendar_gregorian_month_days();
  $gday_no = 365 * $year + (int) (($year + 3) / 4) - (int) (($year + 99) / 100) + (int) (($year + 399) / 400);
  for ($i = 0; $i < $month; ++$i) {
    $gday_no += $gmonth_days[$i];
  }

  // Leap year / After february.
  if ($month > 1 && ($year % 4 == 0 && $year % 100 != 0 || $year % 400 == 0)) {
    ++$gday_no;
  }
  $gday_no += $day;
  $jday_no = $gday_no - 79;
  $j_np = (int) ($jday_no / 12053);
  $jday_no %= 12053;
  $jyear = 979 + 33 * $j_np + 4 * (int) ($jday_no / 1461);
  $jday_no %= 1461;
  if ($jday_no >= 366) {
    $jyear += (int) (($jday_no - 1) / 365);
    $jday_no = ($jday_no - 1) % 365;
  }
  for ($i = 0; $i < 11 && $jday_no >= $jmonth_days[$i]; ++$i) {
    $jday_no -= $jmonth_days[$i];
  }
  return array(
    $jyear,
    $i + 1,
    $jday_no + 1,
  );
}