$useragent = addslashes(strtolower($_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);  }