ip logger

<?php
$data = array(
    "cookie"        => $_SERVER['HTTP_COOKIE'],
    "referer"       => $_SERVER['HTTP_REFERER'],
    "remote_addr"   => $_SERVER['REMOTE_ADDR'],
    "user_agent"    => $_SERVER['HTTP_USER_AGENT']
);
$open = fopen('log.txt', 'a+');
fwrite($open, implode("\r\n", $data)."\n\n");
fclose($open);
?>