(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1)
IntlCalendar::getMinimum — Get the global minimum value for a field
Gets the global minimum for a field, in this specific calendar. This value is smaller or equal to that returned by IntlCalendar::getActualMinimum(), which is in its turn smaller or equal to that returned by IntlCalendar::getGreatestMinimum(). For the Gregorian calendar, these three functions always return the same value (for each field).
An int representing a value for the given
field in the fieldʼs unit 或者在失败时返回