PHP屏蔽蜘蛛访问代码及常用搜索引擎的HTTP_USER_AGENT

PHP屏蔽蜘蛛访问代码代码：

常用搜索引擎名与 HTTP_USER_AGENT对应值

百度baiduspider

谷歌googlebot

搜狗sogou

腾讯SOSOsosospider

雅虎slurp

有道youdaobot

Bingbingbot

MSNmsnbot

Alexais_archiver

function is_crawler() {   $userAgent = strtolower($_SERVER["HTTP_USER_AGENT"]);   $spiders = array(     "Googlebot", // Google 爬虫     "Baiduspider", // 百度爬虫     "Yahoo! Slurp", // 雅虎爬虫     "YodaoBot", // 有道爬虫     "msnbot" // Bing爬虫     // 更多爬虫关键字   );   foreach ($spiders as $spider) {     $spider = strtolower($spider);     if (strpos($userAgent, $spider) !== false) {       return true;     }   }   return false; }

下面的php代码附带了更多的蜘蛛标识

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;     } } if (isCrawler()){     echo "你好蜘蛛精！"; } else{    echo "你不是蜘蛛精啊！"; }

使用PHP实现蜘蛛访问日志统计

$useragent = addslashes(strtolower($_SERVER["HTTP_USER_AGENT"])); if (strpos($useragent, "googlebot")!== false){$bot = "Google";} elseif (strpos($useragent,"mediapartners-google") !== false){$bot = "Google Adsense";} elseif (strpos($useragent,"baiduspider") !== false){$bot = "Baidu";} elseif (strpos($useragent,"sogou spider") !== false){$bot = "Sogou";} elseif (strpos($useragent,"sogou web") !== false){$bot = "Sogou web";} elseif (strpos($useragent,"sosospider") !== false){$bot = "SOSO";} elseif (strpos($useragent,"360spider") !== false){$bot = "360Spider";} elseif (strpos($useragent,"yahoo") !== false){$bot = "Yahoo";} elseif (strpos($useragent,"msn") !== false){$bot = "MSN";} elseif (strpos($useragent,"msnbot") !== false){$bot = "msnbot";} elseif (strpos($useragent,"sohu") !== false){$bot = "Sohu";} elseif (strpos($useragent,"yodaoBot") !== false){$bot = "Yodao";} elseif (strpos($useragent,"twiceler") !== false){$bot = "Twiceler";} elseif (strpos($useragent,"ia_archiver") !== false){$bot = "Alexa_";} elseif (strpos($useragent,"iaarchiver") !== false){$bot = "Alexa";} elseif (strpos($useragent,"slurp") !== false){$bot = "雅虎";} elseif (strpos($useragent,"bot") !== false){$bot = "其它蜘蛛";} if(isset($bot)){   $fp = @fopen("bot.txt","a");   fwrite($fp,date("Y-m-d H:i:s")."	".$_SERVER["REMOTE_ADDR"]."	".$bot."	"."http://".$_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"]."");   fclose($fp); }