PHP Code:
<?php
$myFile = "./data.txt";
$fh = fopen($myFile, 'a') or die("can't open file");
fwrite($fh,"nReferer: ");
fwrite($fh, ($_SERVER['HTTP_REFERER']) );
fwrite($fh,", ");
fwrite($fh, ($_SERVER['HTTP_USER_AGENT']) );
fwrite($fh,", ");
fwrite($fh, $_SERVER['REMOTE_ADDR']);
fwrite($fh,", ");
fwrite($fh, date('l jS of F Y h:i:s A')."\n");
fclose($fh);
?>