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

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

abstract array extractDateOptions(string $matched, int $length) Extract date options

string[] getCountryNames(string $displayLocale = null) Returns the names of all known countries

static string|null getScript(string $locale) Not supported. Returns the script for

static string getDisplayScript(string $locale, string $inLocale = null) Not supported

getErrorCode()

static

bool isLenient() Returns whether the formatter is lenient.

Filesystem getFilesystem()