(PHP 5 >= 5.5.0, PHP 7, PHP 8)
IntlGregorianCalendar::getGregorianChange — Get the Gregorian Calendar change date
Objektorientierter Stil
Prozeduraler Stil
Gets the Gregorian Calendar change date. This is the point at which the calendar switches from Julian dates to Gregorian dates, expressed as a Unix timestamp in milliseconds. It defaults to midnight (UTC) on October 15, 1582.
calendarAn IntlGregorianCalendar instance.
Returns the change date.