代码简单了点。将就着看吧。 这个页面如果是来xxs100.com的访问，将自动跳到广告示例页面  

<?php
/*
Copyright (c) 2008-2018 www.xxs100.com
*/

if (isCrawler()){
//    echo "你好蜘蛛精！";
    header("location:index2.html");
    include template('index2');
    include "index2.html";
}
else{
//    echo "你不是蜘蛛精啊！"; 

}



function isCrawler() {
    echo $agent= strtolower($_SERVER['HTTP_USER_AGENT']);
    if (!empty($agent)) {
        $spiderSite= array(
            "TencentTraveler",
            "Baiduspider+",
            "BaiduGame",
            "Googlebot",
            "msnbot",
            "Sosospider+",
            "Sogou web spider",
            "ia_archiver",
            "Yahoo! Slurp",
            "YoudaoBot",
            "Yahoo Slurp",
            "MSNBot",
            "Java (Often spam bot)",
            "BaiDuSpider",
            "Voila",
            "Yandex bot",
            "BSpider",
            "twiceler",
            "Sogou Spider",
            "Speedy Spider",
            "Google AdSense",
            "Heritrix",
            "Python-urllib",
            "Alexa (IA Archiver)",
            "Ask",
            "Exabot",
            "Custo",
            "OutfoxBot/YodaoBot",
            "yacy",
            "SurveyBot",
            "legs",
            "lwp-trivial",
            "Nutch",
            "StackRambler",
            "The web archive (IA Archiver)",
            "Perl tool",
            "MJ12bot",
            "Netcraft",
            "MSIECrawler",
            "WGet tools",
            "larbin",
            "Fish search",
        );
        foreach($spiderSite as $val) {
            $str = strtolower($val);
            if (strpos($agent, $str) !== false) {
                return true;
            }
        }
    } else {
        return false;
    }
}

?>

  下边是跳转代码

<script type="text/javascript">
var regexp=/\.(xxs100|soso|baidu|google|youdao|yahoo|bing|so|mydigit|gougou|sm|bokee)(\.[a-z0-9\-]+){1,2}\//ig;
var where =document.referrer;
if(regexp.test(where))
{
setTimeout(function(){window.location.href='http://php.xxs100.com/ads1.html'},3000);
}
</script>