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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @see http://github.com/zendframework/zend-diactoros for the canonical source repository
* @copyright Copyright (c) 2015-2016 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;
use InvalidArgumentException;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;
/**
* HTTP response encapsulation.
*
* Responses are considered immutable; all methods that might change state are
* implemented such that they retain the internal state of the current
* message and return a new instance that contains the changed state.
*/
class Response implements ResponseInterface
{
use MessageTrait;
/**
* Map of standard HTTP status code/reason phrases
*
* @var array
*/
private $phrases = [
// INFORMATIONAL CODES
100 => 'Continue',
101 => 'Switching Protocols',
102 => 'Processing',
// SUCCESS CODES
200 => 'OK',
201 => 'Created',
202 => 'Accepted',
203 => 'Non-Authoritative Information',
204 => 'No Content',
205 => 'Reset Content',
206 => 'Partial Content',
207 => 'Multi-status',
208 => 'Already Reported',
226 => 'IM used',
// REDIRECTION CODES
300 => 'Multiple Choices',
301 => 'Moved Permanently',
302 => 'Found',
303 => 'See Other',
304 => 'Not Modified',
305 => 'Use Proxy',
306 => 'Switch Proxy', // Deprecated to 306 => '(Unused)'
307 => 'Temporary Redirect',
308 => 'Permanent Redirect',
// CLIENT ERROR
400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Time-out',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Large',
415 => 'Unsupported Media Type',
416 => 'Requested range not satisfiable',
417 => 'Expectation Failed',
418 => 'I\'m a teapot',
421 => 'Misdirected Request',
422 => 'Unprocessable Entity',
423 => 'Locked',
424 => 'Failed Dependency',
425 => 'Unordered Collection',
426 => 'Upgrade Required',
428 => 'Precondition Required',
429 => 'Too Many Requests',
431 => 'Request Header Fields Too Large',
444 => 'Connection Closed Without Response',
451 => 'Unavailable For Legal Reasons',
// SERVER ERROR
499 => 'Client Closed Request',
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Time-out',
505 => 'HTTP Version not supported',
506 => 'Variant Also Negotiates',
507 => 'Insufficient Storage',
508 => 'Loop Detected',
510 => 'Not Extended',
511 => 'Network Authentication Required',
599 => 'Network Connect Timeout Error',
];
/**
* @var string
*/
private $reasonPhrase = '';
/**
* @var int
*/
private $statusCode;
/**
* @param string|resource|StreamInterface $body Stream identifier and/or actual stream resource
* @param int $status Status code for the response, if any.
* @param array $headers Headers for the response, if any.
* @throws InvalidArgumentException on any invalid element.
*/
public function __construct($body = 'php://memory', $status = 200, array $headers = [])
{
$this->setStatusCode($status);
$this->stream = $this->getStream($body, 'wb+');
list($this->headerNames, $headers) = $this->filterHeaders($headers);
$this->assertHeaders($headers);
$this->headers = $headers;
}
/**
* {@inheritdoc}
*/
public function getStatusCode()
{
return $this->statusCode;
}
/**
* {@inheritdoc}
*/
public function getReasonPhrase()
{
if (! $this->reasonPhrase
&& isset($this->phrases[$this->statusCode])
) {
$this->reasonPhrase = $this->phrases[$this->statusCode];
}
return $this->reasonPhrase;
}
/**
* {@inheritdoc}
*/
public function withStatus($code, $reasonPhrase = '')
{
$new = clone $this;
$new->setStatusCode($code);
$new->reasonPhrase = $reasonPhrase;
return $new;
}
/**
* Validate a status code.
*
* @param int|string $code
* @throws InvalidArgumentException on an invalid status code.
*/
private function setStatusCode($code)
{
if (! is_numeric($code)
|| is_float($code)
|| $code < 100
|| $code >= 600
) {
throw new InvalidArgumentException(sprintf(
'Invalid status code "%s"; must be an integer between 100 and 599, inclusive',
(is_scalar($code) ? $code : gettype($code))
));
}
$this->statusCode = $code;
}
/**
* Ensure header names and values are valid.
*
* @param array $headers
* @throws InvalidArgumentException
*/
private function assertHeaders(array $headers)
{
foreach ($headers as $name => $headerValues) {
HeaderSecurity::assertValidName($name);
array_walk($headerValues, __NAMESPACE__ . '\HeaderSecurity::assertValid');
}
}
}