* @param string $format The format string (See php's docs)
* @param string $data A binary string of binary data
* @param int|bool $length The minimum length of $data or false. This is to
* @param string $format The format string (See php's docs)
* @param string $data A binary string of binary data
* @param int|bool $length The minimum length of $data or false. This is to