1、推薦的一種方法：php判斷搜索引擎蜘蛛爬蟲還是人為訪問代碼,摘自Discuz x3.2
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<?phpfunction checkrobot($useragent=''){ static $kw_spiders = array('bot', 'crawl', 'spider' ,'slurp', 'sohu-search', 'lycos', 'robozilla'); static $kw_browsers = array('msie', 'netscape', 'opera', 'konqueror', 'mozilla'); $useragent = strtolower(empty($useragent) ? $_SERVER['HTTP_USER_AGENT'] : $useragent); if(strpos($useragent, 'http://') === false && dstrpos($useragent, $kw_browsers)) return false; if(dstrpos($useragent, $kw_spiders)) return true; return false;}function dstrpos($string, $arr, $returnvalue = false) { if(empty($string)) return false; foreach((array)$arr as $v) { if(strpos($string, $v) !== false) { $return = $returnvalue ? $v : true; return $return; } } return false;}if(checkrobot()){ echo '機器人爬蟲';}else{ echo '人';}?> |
實際應用中可以這樣判斷，直接不是搜索引擎才執行操作
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<?phpif(!checkrobot()){//do something}?> |
2、第二種方法：
使用PHP實現蜘蛛訪問日志統計
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$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); } |
第三種方法：
我們可以通過HTTP_USER_AGENT來判斷是否是蜘蛛，搜索引擎的蜘蛛都有自己的獨特標志，下面列取了一部分。
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function is_crawler() { $userAgent = strtolower($_SERVER['HTTP_USER_AGENT']); $spiders = array( 'Googlebot', // Google 爬蟲 'Baiduspider', // 百度爬蟲 'Yahoo! Slurp', // 雅虎爬蟲 'YodaoBot', // 有道爬蟲 'msnbot' // Bing爬蟲 // 更多爬蟲關鍵字 ); foreach ($spiders as $spider) { $spider = strtolower($spider); if (strpos($userAgent, $spider) !== false) { return true; } } return false; } |
下面的php代碼附帶了更多的蜘蛛標識
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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, $str) !== false) { return true; } } } else { return false; } } if (isCrawler()){ echo "你好蜘蛛精！"; } else{ echo "你不是蜘蛛精啊！"; } |
第四種方法：
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<?php$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){ // 自動轉到http://www.ythuaji.com.cn 對應的網頁 // $_SERVER['REQUEST_URI'] 為域名后面的路徑 // 或換成header("Location: http://www.ythuaji.com.cn/tags.html"); exit();}?> |
