public static library ( integer $new_library = null ) : mixed | ||
$new_library | integer | The new library to use. One of the self::USE_* constants, null to simply return, or false to disable and use native non-multibyte-safe PHP methods. |
return | mixed | If $new_library is null, returns the current library being used. If $new_library has a valid value, returns the old library, else returns false. |