搬运-蜘蛛php测试代码
可以通过php的gethostbyname功能
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function testbotip($ip,$agent) { $hostname = gethostbyaddr($ip); if ($hostname==$ip) return false; $rip = gethostbyname($hostname); // we use long version because there could be multiple A records. print "Ip:$ip\tHostname: $hostname = $agent\t\t"; if ($ip==$rip) { //host is not faked so now let's see if it is who it says it is via agent if(preg_match("/bing|msnbot/I",$agent)&&(preg_match("/msn\.com/I",$hostname))) return true; if(preg_match("/Google/I",$agent)&&(preg_match("/Google\.com/I",$hostname))) return true; if(preg_match("/yahoo/I",$agent)&&(preg_match("/yahoo\.com/I",$hostname))) return true; if(preg_match("/twittervir/I",$agent)&&(preg_match("/twttr\.com/I",$hostname))) return true; //ok done standard ones we know ... now we need to try generic test. //good bots will give a domain where they can be looked up. This should match their reverse ip domain. preg_match("/([\w]+\.[\w]+)($|\.uk$)/",strtolower($hostname),$matches); $dom1 = $matches[0]; if (!(strpos($agent, $dom1) !== false)) { //echo "$dom1 NOT FOUND !!\n"; return false; } return true; } return false;} |
