if (strpos($row['ban_ip'], '-') !== false) // IP check using range
{
  list ($startIP, $endIP) = split('-', $row['ban_ip']);
  $startIP = sprintf('%u', ip2long($startIP))
  $endIP = sprintf('%u', ip2long($endIP))
  $userIP = sprintf('%u', ip2long($ip));
  if (($userIP >= $startIP) && ($userIP <= $endIP))
  {
    return true;
  }
}