This script will log every person who comes on to your site, if you put this on every page with a new file for each page then you could tell what every person did on your site unless they download something. Right now the file is admin.txt, so you will have to create that file too.

<?php

$Date = date("F jS Y, h:iA");

$user_ip = $REMOTE_ADDR;

$host = gethostbyaddr($user_ip);

$user_browser = $HTTP_USER_AGENT;

$file = "admin.txt";

$fp = fopen($file, "a+");

fputs ($fp, "<br>Date: $Date <bR> IP: $user_ip <br> Host $host <br> Browser: $user_browser<br>------------------------------------<br>");

fclose($fp);

?>