这是一个记录用户踪迹的片段

if($_GET[mode]) {
  $mode = $_GET[mode];
  $url = $_GET[url];
  $ip = $_SERVER[REMOTE_ADDR];
  $fp = fopen("msg.txt","a+");
  fputs($fp,"$ip ".date("Y-m-d H:i:s")." $mode $url\n");
  fclose($fp);
  exit;
}
?>

<script><br/>function msg(v) {<br/> view.innerHTML = '<iframe src="msg.php?mode='+v+'&url='+location.href+'">';<br/>}<br/></script>