require_once 'I18Nv2/Language.php';
boolean I18Nv2_Language::isValidCode (string $code)
boolean I18Nv2_Language::isValidCode
Check if the supplied two/three letter language code is valid.
two/three letter language code
Returns boolean whether the two/three letter language code is valid.
Эта функция не должна вызываться статически.