define('KEY', '12345678');


define('REQFORMAT', '%s.%s.dnsbl.httpbl.org');


define('NOTIFYEMAIL', 'me@mymail.com');





$remoteIP = $_SERVER['REMOTE_ADDR'];





$remoteData = explode('.', $remoteIP);


$reverseData = array_reverse($remoteData);


$reverseIP = implode('.', $reverseData);





$lookup = dns_get_record(sprintf(REQFORMAT, KEY, $reverseIP), DNS_A);





if (count($lookup) > 0) {


  // Something is up


  $data = current($lookup);


  $info = explode('.', $data['ip']);





  $requestCode = $info[0];


  $lastActivity = $info[1];


  $threatScore = $info[2];


  $visitorType = $info[3];





  // http://www.projecthoneypot.org/httpbl_api.php


  // If not 127 an error may have occurred - so we can't block


  if ($requestCode == '127') {


    if ($visitorType >= 2) {


      $refURL = 'http://www.projecthoneypot.org';


      echo 'Access Denined To Content: See: <a href="' . $refURL . '">' . $refURL . '</a>';


      mail(NOTIFYEMAIL, 'Access Blocked Via HoneyPot: ' . $remoteIP, '');


      exit;


    }





  }


}