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cal_to_jd

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

cal_to_jd — Converts from a supported calendar to Julian Day Count

Description

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 calendars are CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH and CAL_FRENCH.

Parameters

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

Return Values

A Julian Day number.

See Also