帝国cms插件之时间戳防盗链鉴权php实现

帝国CMS插件之时间戳防盗链鉴权php实现思路：
 

<?php
$url="/1.png?v=1";
$url = explode("?", $url);
$path=basename($url[0]);
$path="/".$path;
$time = time()+3600;
$T=dechex($time);
$key="xxxx";
$S=$key.$path.$T;
$token = md5($S);
$sign =strtolower($token);
if(isset($url[1])){
$url = "".$path."?".$url[1]."&sign=".$sign."&t=".$T;
echo($url);
}else{
$url = "".$path."?sign=".$sign."&t=".$T;
echo($url);
}