<?php
/**
* @see http://github.com/zendframework/zend-diactoros for the canonical source repository
* @copyright Copyright (c) 2017 Zend Technologies USA Inc. (http://www.zend.com)
* @license https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
*/
namespace Zend\Diactoros\Response;
use Psr\Http\Message\ResponseInterface;
use UnexpectedValueException;
use Zend\Diactoros\Response;
use Zend\Diactoros\Stream;
use function sprintf;
/**
* Serialize or deserialize response messages to/from arrays.
*
* This class provides functionality for serializing a ResponseInterface instance
* to an array, as well as the reverse operation of creating a Response instance
* from an array representing a message.
*/
final class ArraySerializer
{
/**
* Serialize a response message to an array.
*
* @param ResponseInterface $response
* @return array
*/
public static function toArray(ResponseInterface $response)
{
return [
'status_code' => $response->getStatusCode(),
'reason_phrase' => $response->getReasonPhrase(),
'protocol_version' => $response->getProtocolVersion(),
'headers' => $response->getHeaders(),
'body' => (string) $response->getBody(),
];
}
/**
* Deserialize a response array to a response instance.
*
* @param array $serializedResponse
* @return Response
* @throws UnexpectedValueException when cannot deserialize response
*/
public static function fromArray(array $serializedResponse)
{
try {
$body = new Stream('php://memory', 'wb+');
$body->write(self::getValueFromKey($serializedResponse, 'body'));
$statusCode = self::getValueFromKey($serializedResponse, 'status_code');
$headers = self::getValueFromKey($serializedResponse, 'headers');
$protocolVersion = self::getValueFromKey($serializedResponse, 'protocol_version');
$reasonPhrase = self::getValueFromKey($serializedResponse, 'reason_phrase');
return (new Response($body, $statusCode, $headers))
->withProtocolVersion($protocolVersion)
->withStatus($statusCode, $reasonPhrase);
} catch (\Exception $exception) {
throw new UnexpectedValueException('Cannot deserialize response', null, $exception);
}
}
/**
* @param array $data
* @param string $key
* @param string $message
* @return mixed
* @throws UnexpectedValueException
*/
private static function getValueFromKey(array $data, $key, $message = null)
{
if (isset($data[$key])) {
return $data[$key];
}
if ($message === null) {
$message = sprintf('Missing "%s" key in serialized request', $key);
}
throw new UnexpectedValueException($message);
}
}