<?
 namespace ReCaptcha {
  set_include_path(get_include_path() . PATH_SEPARATOR . "/home/admin/classes/");
  $recaptcha_base_dir = $base_dir . "common/recaptcha/";

  require_once $recaptcha_base_dir . 'src/ReCaptcha/ReCaptcha.php';
  require_once $recaptcha_base_dir . 'src/ReCaptcha/RequestMethod.php';
  require_once $recaptcha_base_dir . 'src/ReCaptcha/RequestParameters.php';
  require_once $recaptcha_base_dir . 'src/ReCaptcha/Response.php';
  require_once $recaptcha_base_dir . 'src/ReCaptcha/RequestMethod/Post.php';
  require_once $recaptcha_base_dir . 'src/ReCaptcha/RequestMethod/Socket.php';
  require_once $recaptcha_base_dir . 'src/ReCaptcha/RequestMethod/SocketPost.php';

  $recaptcha = new \ReCaptcha\ReCaptcha($google_recaptcha_secret);
  $resp = $recaptcha->verify($_POST["g-recaptcha-response"]);

  if(!$resp->isSuccess()) {
   foreach($resp->getErrorCodes() as $errorCode) {
    switch($errorCode) {
     case "missing-input-secret": // should be 500 error
     case "invalid-input-secret":
      $errors[] = "We're sorry, but we cannot process this request. Please contact the site administrator.";
      break;
     case "missing-input-response": // have user resend the request
     case "invalid-input-response":
      $errors[] = "The ReCaptcha verification is invalid."; // change msg
      break;
     default:
      break;
    } // end switch
   } // end foreach
  } // end if
 } // end namespace
?>