example:

页面:dl.php

--------------------------------------------------------------------------------------

复制代码 代码如下:

<?php

$id=$_GET['id'];

$act=$_GET['act'];

switch($act){

default:

case"display":displayHTML();break;

case"down":down();break;

}

functiondisplayHTML($id){

setcookie("visited","true");

//printyourHTML.

}

functiondown($id){

if(!isset($_COOKIE['visited']))print"你盗联?";

$sql="selectpathfromTABLEwhereid=".$id;

//..............................

}

?>

<ahref="dl.php?id=1&act=down">DownloadNow...</a>