6 calls to date_is_leap_year() in Date 6

date_calc_days_in_month in date_php4/date_php4_calc.inc

Find the number of days in the given month.

date_calc_gregorian_to_ISO in date_php4/date_php4_calc.inc

Converts from Gregorian Year-Month-Day to ISO Year-WeekNumber-WeekDay

date_calc_julian_date in date_php4/date_php4_calc.inc

Returns number of days since 31 December of year before given date.

date_php4.inc in date_php4/date_php4.inc

_date_getdate in date_php4/date_php4_lib.inc

Low-level function that returns the getdate() array for pre-1970 and post-2038 dates.

_date_mktime in date_php4/date_php4_lib.inc

Low level function to create mktime() for pre-1970 and post 2038 dates.