PHP Manual: Converts from a supported calendar to Julian Day Count

Description

int cal_to_jd(
    int $calendar,
    int $month,
    int $day,
    int $year
)

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.

cal_to_jd

Description

Parameters

Return Values

See Also