CONST ENCODE_BASE_64		= 1;
		
		CONST UUID_CLEAR_VER		= 15;
		CONST UUID_VERSION_4		= 64;
		CONST UUID_CLEAR_VAR		= 63;
		CONST UUID_VAR_RFC		= 128;

		static function uuid(array $__options = [])
		{
			$__options +=
			[
				'delimiter' 	=> self::MINUS,
				'before'	=> self::DEVOID,
				'after'		=> self::DEVOID
			];
			
			$uuid		= static::random(0x10);
			
			$uuid[0x06]	= chr(ord($uuid[0x06]) & static::UUID_CLEAR_VER | static::UUID_VERSION_4);
			$uuid[0x08]	= chr(ord($uuid[0x08]) & static::UUID_CLEAR_VAR | static::UUID_VAR_RFC);
			
			return static::insert('{:before}{:value}{:after}', ['value' => static::join([
				bin2hex(static::sub($uuid, 0x00, 0x04)),
				bin2hex(static::sub($uuid, 0x04, 0x02)),
				bin2hex(static::sub($uuid, 0x06, 0x02)),
				bin2hex(static::sub($uuid, 0x08, 0x02)),
				bin2hex(static::sub($uuid, 0x0A, 0x06))], $__options['delimiter'])] + $__options);
		}