static string getIcuDataVersion() Returns the ICU data version that ships with Symfony

class DayOfWeekTransformer extends

class StubIntlDateFormatter extends

class StubNumberFormatter extends

class TimeZoneTransformer extends

static string|null getIntlIcuDataVersion() Returns the ICU Data version as defined

static getDataDirectory()

class Hour2401Transformer extends

static array getLocales() Returns all available locale codes.