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

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

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

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

class DayOfYearTransformer extends

static string getEtcTimeZoneId(string $formattedTimeZone) Get an Etc/GMT timezone

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

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

class DayOfWeekTransformer extends

string format(DateTime $dateTime, int $length)