$ADMIN[defaulturl] = "http://yuncode.net/404.htm";//盗链返回的地址  
$okaysites = array("http://yuncode.net/","http://www.yuncode.net"); //白名单   
$ADMIN[url_1] = "http://yuncode.net/temp/download/";//下载地点1  
$ADMIN[url_2] = "";//下载地点2，以此类推  
 
$reffer = $HTTP_REFERER;  
if($reffer) {  
$yes = 0;  
while(list($domain, $subarray) = each($okaysites)) {  
if (ereg($subarray,"$reffer")) {  
$yes = 1;  
}  
}  
$theu = "url"."_"."$site";  
if ($ADMIN[$theu] AND $yes == 1) {  
header("Location: $ADMIN[$theu]/$file");  
} else {  
header("Location: $ADMIN[defaulturl]");  
}  
} else {  
header("Location: $ADMIN[defaulturl]");  
}?>