Method hashToInt

/**
 * Extracts a part of a hash as an integer
 *
 * @param   string  $bytes  The hash
 * @param   string  $start  The char to start from (0 = first char)
 *
 * @return  string
 */
protected function hashToInt($bytes, $start)
{
    $input = substr($bytes, $start, \strlen($bytes) - $start);
    $val2 = unpack("N", substr($input, 0, 4));
    return $val2[1];
}