class YearTransformer extends

int normalizeHour(int $hour, string $marker = null) Returns a normalized hour value suitable

string getReverseMatchingRegExp(int $length) Returns a reverse matching regular expression of

array extractDateOptions(string $matched, int $length) Extract date options from a matched value

string replaceQuoteMatch(string $quoteMatch) Replaces single quotes at the start or end of a

string getReverseMatchingRegExp(int $length) Returns a reverse matching regular expression of

string formatObject(object $object, mixed $format = null, string $locale = null) Not supported

bool setCalendar(string $calendar) Not supported. Set the formatter's calendar.

string format(DateTime $dateTime, int $length)

string getReverseMatchingRegExp(int $length) Returns a reverse matching regular expression of