Check values in a text file

[Vivid Lust]

Hi,

 

Im looking to make an IP checker, a script which reads the IP's in a text file, and if the IP of the user exists then the script does X

 

Ip's and text file would be separated by a new line.

Any ideas how I could do this?

 

Thanks.

[jnerotrix]

Here is something I made a while back it puts user ip's into a text file on a new line and won't add the same ip twice

 

Http://mytestsite.rack111.com/counter/usertrack.zip

[rhodesa]

$ip = $_SERVER["REMOTE_ADDR"];
$ips = file('ip_list.txt'); //Reads IPs into an array
if(in_array($ip,$ips)){
  echo "IP is in list";
}else{
  echo "IP is NOT in list";
}