quickwebp / includes / vendor / psr / http-message / src / ResponseInterface.php

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1	<?php
2
3	namespace Psr\Http\Message;
4
5	/**
6	* Representation of an outgoing, server-side response.
7	*
8	* Per the HTTP specification, this interface includes properties for
9	* each of the following:
10	*
11	* - Protocol version
12	* - Status code and reason phrase
13	* - Headers
14	* - Message body
15	*
16	* Responses are considered immutable; all methods that might change state MUST
17	* be implemented such that they retain the internal state of the current
18	* message and return an instance that contains the changed state.
19	*/
20	interface ResponseInterface extends MessageInterface
21	{
22	/**
23	* Gets the response status code.
24	*
25	* The status code is a 3-digit integer result code of the server's attempt
26	* to understand and satisfy the request.
27	*
28	* @return int Status code.
29	*/
30	public function getStatusCode();
31
32	/**
33	* Return an instance with the specified status code and, optionally, reason phrase.
34	*
35	* If no reason phrase is specified, implementations MAY choose to default
36	* to the RFC 7231 or IANA recommended reason phrase for the response's
37	* status code.
38	*
39	* This method MUST be implemented in such a way as to retain the
40	* immutability of the message, and MUST return an instance that has the
41	* updated status and reason phrase.
42	*
43	* @link http://tools.ietf.org/html/rfc7231#section-6
44	* @link http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
45	* @param int $code The 3-digit integer result code to set.
46	* @param string $reasonPhrase The reason phrase to use with the
47	* provided status code; if none is provided, implementations MAY
48	* use the defaults as suggested in the HTTP specification.
49	* @return static
50	* @throws \InvalidArgumentException For invalid status code arguments.
51	*/
52	public function withStatus($code, $reasonPhrase = '');
53
54	/**
55	* Gets the response reason phrase associated with the status code.
56	*
57	* Because a reason phrase is not a required element in a response
58	* status line, the reason phrase value MAY be null. Implementations MAY
59	* choose to return the default RFC 7231 recommended reason phrase (or those
60	* listed in the IANA HTTP Status Code Registry) for the response's
61	* status code.
62	*
63	* @link http://tools.ietf.org/html/rfc7231#section-6
64	* @link http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
65	* @return string Reason phrase; must return an empty string if none present.
66	*/
67	public function getReasonPhrase();
68	}
69