Converts from a supported calendar to Julian Day Count_脚本学堂

说明

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 calendar s are CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH and CAL_FRENCH.

参数

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

返回值

A Julian Day number.

参见

cal_from_jd() - Converts from Julian Day Count to a supported calendar
frenchtojd() - Converts a date from the French Republican Calendar to a Julian Day Count
gregoriantojd() - Converts a Gregorian date to Julian Day Count
jewishtojd() - Converts a date in the Jewish Calendar to Julian Day Count
juliantojd() - Converts a Julian Calendar date to Julian Day Count
unixtojd() - Convert Unix timestamp to Julian Day