/**
* Converts from a supported calendar to Julian Day Count
*
* Shim implementation of \cal_to_jd()
*
* @link https://php.net/cal_to_jd
*
* @param int $calendar
* @param int $month
* @param int $day
* @param int $year
*
* @return int
*/
public static function calToJd($calendar, $month, $day, $year)
{
switch ($calendar) {
case CAL_FRENCH:
return Shim::frenchToJd($month, $day, $year);
case CAL_GREGORIAN:
return Shim::gregorianToJd($month, $day, $year);
case CAL_JEWISH:
return Shim::jewishToJd($month, $day, $year);
case CAL_JULIAN:
return Shim::julianToJd($month, $day, $year);
default:
return trigger_error('invalid calendar ID ' . $calendar . '.', E_USER_WARNING);
}
}
