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')."\t".$_server["remote_addr"]."\t".$bot."\t".'http://'.$_server['server_name'].$_server["request_uri"]."\r\n");
     fclose($fp);
 }