src/main/php/com-realexpayments-hpp-sdk/RealexHpp.php
public function responseFromJson($json, $encoded = true)
    {
        $this->logger->info("Converting JSON to HppResponse.");

        //convert to HppResponse from JSON
        $hppResponse = JsonUtils::fromJsonHppResponse($json);

        //decode if necessary
        if ($encoded) {
            $this->logger->debug("Decoding object.");
            try {
                $hppResponse = $hppResponse->decode(self::ENCODING_CHARSET);
            } catch (Exception $e) {
                $this->logger->error("Exception decoding HPP response.", $e);
                throw new RealexException("Exception decoding HPP response.", $e);
            }
        }

        //validate HPP response hash
        $this->logger->debug("Validating response hash.");
        ValidationUtils::validateResponse($hppResponse, $this->secret);

        return $hppResponse;
    }
public function responseFromJson($json, $encoded = true)
    {
        $this->logger->info("Converting JSON to HppResponse.");

        //convert to HppResponse from JSON
        $hppResponse = JsonUtils::fromJsonHppResponse($json);

        //decode if necessary
        if ($encoded) {
            $this->logger->debug("Decoding object.");
            try {
                $hppResponse = $hppResponse->decode(self::ENCODING_CHARSET);
            } catch (Exception $e) {
                $this->logger->error("Exception decoding HPP response.", $e);
                throw new RealexException("Exception decoding HPP response.", $e);
            }
        }

        //validate HPP response hash
        $this->logger->debug("Validating response hash.");
        ValidationUtils::validateResponse($hppResponse, $this->secret);

        return $hppResponse;
    }
<p>
Method produces <code>HppResponse</code> object from JSON.
Carries out the following actions:
<ul>
<li>Deserialises JSON to response object</li>
<li>Decodes Base64 inputs</li>
<li>Validates hash</li>
</ul>
</p>

@param string $json
@param bool $encoded
@return HppResponse