Parsing ip data from a file

parse_austria.php

<?php 
$infile = 'austria.csv';
$outfile = 'austria.ips';

$fp = fopen($outfile,'w');
$handle = fopen($infile, "r");
if ($handle)
{
    while (($line = fgets($handle)) !== false) {
        $line = trim($line);
        $a = explode(',',$line);
        $from = str_replace('"','',$a[0]);
        $to = str_replace('"','',$a[1]);
        for($i=$from;$i<=$to;$i++)
        {
          $ip = long2ip($i);
          fwrite($fp,$ip."\n");
          if(++$j % 10000==0)
                echo ".";
        }
    }

    fclose($handle);
}
fclose($fp);

For those who want a Python version:

import socket
import struct

input_file = open("austria.csv", "r")
output_file = open("austria.ips", "w")

for line in input_file:
  to_ip, from_ip, _, _ = line.replace("\"", "").split(",")

  to_ip = int(to_ip)
  from_ip = int(from_ip)

  for ip_index in range(to_ip, from_ip):
    ip = socket.inet_ntoa(struct.pack("!L", ip_index))
    output_file.write(ip + "\n")

input_file.close()
output_file.close()