PHP实现防盗链

<?php

$ADMIN[defaulturl] = "http://www.qq.com/404.htm";//盗链返回的地址

$okaysites = array("http://127.0.0.1/","http://localhost"); //白名单

$ADMIN[url_1] = "http://www.163.com/download/";//下载地点1

$ADMIN[url_2] = "";//下载地点2，以此类推

$reffer = $_SERVER["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]");

}

?>