(PHP 4 >= 4.1.0, PHP 5, PHP 7)
cal_to_jd — Converts from a supported calendar to Julian Day Count
cal_to_jd ( int $calendar , int $month , int $day , int $year ) : int
cal_to_jd() calculates the Julian day count for a date in the specified calendar
. Supported calendar
s are CAL_GREGORIAN
, CAL_JULIAN
, CAL_JEWISH
and CAL_FRENCH
.
calendar
Calendar to convert from, one of CAL_GREGORIAN
, CAL_JULIAN
, CAL_JEWISH
or CAL_FRENCH
.
month
The month as a number, the valid range depends on the calendar
day
The day as a number, the valid range depends on the calendar
year
The year as a number, the valid range depends on the calendar
A Julian Day number.
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.cal-to-jd.php