" . self::$_signupUrl . ''); } $this->_secret = $secret; } /** * Encodes the given data into a query string format. * * @param array $data array of string elements to be encoded. * * @return string - encoded request. */ private function _encodeQS($data) { $req = ''; foreach ( $data as $key => $value ) { $req .= $key . '=' . urlencode(stripslashes($value ) ) . '&'; } // Cut the last '&' $req = substr($req, 0, strlen($req ) -1 ); return $req; } /** * Submits an HTTP GET to a reCAPTCHA server. * * @param string $path url path to recaptcha server. * @param array $data array of parameters to be sent. * * @return array response */ private function _submitHTTPGet( $path, $data ) { $req = $this->_encodeQS($data ); if ( version_compare( phpversion(), '5.6', '<' ) ) { $response = file_get_contents( $path . $req ); } else { $ctx = array( 'ssl' => array( 'verify_peer' => false, 'verify_peer_name' => false, 'allow_self_signed' => true, ), ); $response = file_get_contents( $path . $req, false, stream_context_create( $ctx ) ); } return $response; } /** * Calls the reCAPTCHA siteverify API to verify whether the user passes * CAPTCHA test. * * @param string $remoteIp IP address of end user. * @param string $response response string from recaptcha verification. * * @return gglcptch_ReCaptchaResponse */ public function verifyResponse($remoteIp, $response) { // Discard empty solution submissions if ( $response == null || strlen($response ) == 0 ) { $recaptchaResponse = new gglcptch_ReCaptchaResponse(); $recaptchaResponse->success = false; $recaptchaResponse->errorCodes = 'missing-input'; return $recaptchaResponse; } $getResponse = $this->_submitHttpGet( self::$_siteVerifyUrl, array( 'secret' => $this->_secret, 'remoteip' => $remoteIp, 'v' => self::$_version, 'response' => $response, ) ); $answers = json_decode($getResponse, true ); $recaptchaResponse = new gglcptch_ReCaptchaResponse(); if ( trim($answers ['success'] ) == true ) { $recaptchaResponse->success = true; } else { $recaptchaResponse->success = false; $recaptchaResponse->errorCodes = isset( $answers['error-codes'] ) ? $answers['error-codes'] : ''; } return $recaptchaResponse; } }