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Response.php
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Response.php
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<?php
declare(strict_types=1);
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 2.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Http;
use Cake\Core\Configure;
use Cake\Http\Cookie\CookieCollection;
use Cake\Http\Cookie\CookieInterface;
use Cake\Http\Exception\NotFoundException;
use DateTime;
use DateTimeInterface;
use DateTimeZone;
use InvalidArgumentException;
use Laminas\Diactoros\MessageTrait;
use Laminas\Diactoros\Stream;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;
use SplFileInfo;
use function Cake\Core\deprecationWarning;
use function Cake\Core\env;
use function Cake\I18n\__d;
/**
* Responses contain the response text, status and headers of a HTTP response.
*
* There are external packages such as `fig/http-message-util` that provide HTTP
* status code constants. These can be used with any method that accepts or
* returns a status code integer. Keep in mind that these constants might
* include status codes that are now allowed which will throw an
* `\InvalidArgumentException`.
*/
class Response implements ResponseInterface
{
use MessageTrait;
/**
* @var int
*/
public const STATUS_CODE_MIN = 100;
/**
* @var int
*/
public const STATUS_CODE_MAX = 599;
/**
* Allowed HTTP status codes and their default description.
*
* @var array<int, string>
*/
protected $_statusCodes = [
100 => 'Continue',
101 => 'Switching Protocols',
102 => 'Processing',
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',
300 => 'Multiple Choices',
301 => 'Moved Permanently',
302 => 'Found',
303 => 'See Other',
304 => 'Not Modified',
305 => 'Use Proxy',
306 => '(Unused)',
307 => 'Temporary Redirect',
308 => 'Permanent Redirect',
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 Timeout',
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',
499 => 'Client Closed Request',
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'Unsupported Version',
506 => 'Variant Also Negotiates',
507 => 'Insufficient Storage',
508 => 'Loop Detected',
510 => 'Not Extended',
511 => 'Network Authentication Required',
599 => 'Network Connect Timeout Error',
];
/**
* Holds type key to mime type mappings for known mime types.
*
* @var array<string, mixed>
*/
protected $_mimeTypes = [
'html' => ['text/html', '*/*'],
'json' => 'application/json',
'xml' => ['application/xml', 'text/xml'],
'xhtml' => ['application/xhtml+xml', 'application/xhtml', 'text/xhtml'],
'webp' => 'image/webp',
'rss' => 'application/rss+xml',
'ai' => 'application/postscript',
'bcpio' => 'application/x-bcpio',
'bin' => 'application/octet-stream',
'ccad' => 'application/clariscad',
'cdf' => 'application/x-netcdf',
'class' => 'application/octet-stream',
'cpio' => 'application/x-cpio',
'cpt' => 'application/mac-compactpro',
'csh' => 'application/x-csh',
'csv' => ['text/csv', 'application/vnd.ms-excel'],
'dcr' => 'application/x-director',
'dir' => 'application/x-director',
'dms' => 'application/octet-stream',
'doc' => 'application/msword',
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'drw' => 'application/drafting',
'dvi' => 'application/x-dvi',
'dwg' => 'application/acad',
'dxf' => 'application/dxf',
'dxr' => 'application/x-director',
'eot' => 'application/vnd.ms-fontobject',
'eps' => 'application/postscript',
'exe' => 'application/octet-stream',
'ez' => 'application/andrew-inset',
'flv' => 'video/x-flv',
'gtar' => 'application/x-gtar',
'gz' => 'application/x-gzip',
'bz2' => 'application/x-bzip',
'7z' => 'application/x-7z-compressed',
'hal' => ['application/hal+xml', 'application/vnd.hal+xml'],
'haljson' => ['application/hal+json', 'application/vnd.hal+json'],
'halxml' => ['application/hal+xml', 'application/vnd.hal+xml'],
'hdf' => 'application/x-hdf',
'hqx' => 'application/mac-binhex40',
'ico' => 'image/x-icon',
'ips' => 'application/x-ipscript',
'ipx' => 'application/x-ipix',
'js' => 'application/javascript',
'jsonapi' => 'application/vnd.api+json',
'latex' => 'application/x-latex',
'jsonld' => 'application/ld+json',
'kml' => 'application/vnd.google-earth.kml+xml',
'kmz' => 'application/vnd.google-earth.kmz',
'lha' => 'application/octet-stream',
'lsp' => 'application/x-lisp',
'lzh' => 'application/octet-stream',
'man' => 'application/x-troff-man',
'me' => 'application/x-troff-me',
'mif' => 'application/vnd.mif',
'ms' => 'application/x-troff-ms',
'nc' => 'application/x-netcdf',
'oda' => 'application/oda',
'otf' => 'font/otf',
'pdf' => 'application/pdf',
'pgn' => 'application/x-chess-pgn',
'pot' => 'application/vnd.ms-powerpoint',
'pps' => 'application/vnd.ms-powerpoint',
'ppt' => 'application/vnd.ms-powerpoint',
'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'ppz' => 'application/vnd.ms-powerpoint',
'pre' => 'application/x-freelance',
'prt' => 'application/pro_eng',
'ps' => 'application/postscript',
'roff' => 'application/x-troff',
'scm' => 'application/x-lotusscreencam',
'set' => 'application/set',
'sh' => 'application/x-sh',
'shar' => 'application/x-shar',
'sit' => 'application/x-stuffit',
'skd' => 'application/x-koan',
'skm' => 'application/x-koan',
'skp' => 'application/x-koan',
'skt' => 'application/x-koan',
'smi' => 'application/smil',
'smil' => 'application/smil',
'sol' => 'application/solids',
'spl' => 'application/x-futuresplash',
'src' => 'application/x-wais-source',
'step' => 'application/STEP',
'stl' => 'application/SLA',
'stp' => 'application/STEP',
'sv4cpio' => 'application/x-sv4cpio',
'sv4crc' => 'application/x-sv4crc',
'svg' => 'image/svg+xml',
'svgz' => 'image/svg+xml',
'swf' => 'application/x-shockwave-flash',
't' => 'application/x-troff',
'tar' => 'application/x-tar',
'tcl' => 'application/x-tcl',
'tex' => 'application/x-tex',
'texi' => 'application/x-texinfo',
'texinfo' => 'application/x-texinfo',
'tr' => 'application/x-troff',
'tsp' => 'application/dsptype',
'ttc' => 'font/ttf',
'ttf' => 'font/ttf',
'unv' => 'application/i-deas',
'ustar' => 'application/x-ustar',
'vcd' => 'application/x-cdlink',
'vda' => 'application/vda',
'xlc' => 'application/vnd.ms-excel',
'xll' => 'application/vnd.ms-excel',
'xlm' => 'application/vnd.ms-excel',
'xls' => 'application/vnd.ms-excel',
'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'xlw' => 'application/vnd.ms-excel',
'zip' => 'application/zip',
'aif' => 'audio/x-aiff',
'aifc' => 'audio/x-aiff',
'aiff' => 'audio/x-aiff',
'au' => 'audio/basic',
'kar' => 'audio/midi',
'mid' => 'audio/midi',
'midi' => 'audio/midi',
'mp2' => 'audio/mpeg',
'mp3' => 'audio/mpeg',
'mpga' => 'audio/mpeg',
'ogg' => 'audio/ogg',
'oga' => 'audio/ogg',
'spx' => 'audio/ogg',
'ra' => 'audio/x-realaudio',
'ram' => 'audio/x-pn-realaudio',
'rm' => 'audio/x-pn-realaudio',
'rpm' => 'audio/x-pn-realaudio-plugin',
'snd' => 'audio/basic',
'tsi' => 'audio/TSP-audio',
'wav' => 'audio/x-wav',
'aac' => 'audio/aac',
'asc' => 'text/plain',
'c' => 'text/plain',
'cc' => 'text/plain',
'css' => 'text/css',
'etx' => 'text/x-setext',
'f' => 'text/plain',
'f90' => 'text/plain',
'h' => 'text/plain',
'hh' => 'text/plain',
'htm' => ['text/html', '*/*'],
'ics' => 'text/calendar',
'm' => 'text/plain',
'rtf' => 'text/rtf',
'rtx' => 'text/richtext',
'sgm' => 'text/sgml',
'sgml' => 'text/sgml',
'tsv' => 'text/tab-separated-values',
'tpl' => 'text/template',
'txt' => 'text/plain',
'text' => 'text/plain',
'avi' => 'video/x-msvideo',
'fli' => 'video/x-fli',
'mov' => 'video/quicktime',
'movie' => 'video/x-sgi-movie',
'mpe' => 'video/mpeg',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'qt' => 'video/quicktime',
'viv' => 'video/vnd.vivo',
'vivo' => 'video/vnd.vivo',
'ogv' => 'video/ogg',
'webm' => 'video/webm',
'mp4' => 'video/mp4',
'm4v' => 'video/mp4',
'f4v' => 'video/mp4',
'f4p' => 'video/mp4',
'm4a' => 'audio/mp4',
'f4a' => 'audio/mp4',
'f4b' => 'audio/mp4',
'gif' => 'image/gif',
'ief' => 'image/ief',
'jpg' => 'image/jpeg',
'jpeg' => 'image/jpeg',
'jpe' => 'image/jpeg',
'pbm' => 'image/x-portable-bitmap',
'pgm' => 'image/x-portable-graymap',
'png' => 'image/png',
'pnm' => 'image/x-portable-anymap',
'ppm' => 'image/x-portable-pixmap',
'ras' => 'image/cmu-raster',
'rgb' => 'image/x-rgb',
'tif' => 'image/tiff',
'tiff' => 'image/tiff',
'xbm' => 'image/x-xbitmap',
'xpm' => 'image/x-xpixmap',
'xwd' => 'image/x-xwindowdump',
'psd' => [
'application/photoshop',
'application/psd',
'image/psd',
'image/x-photoshop',
'image/photoshop',
'zz-application/zz-winassoc-psd',
],
'ice' => 'x-conference/x-cooltalk',
'iges' => 'model/iges',
'igs' => 'model/iges',
'mesh' => 'model/mesh',
'msh' => 'model/mesh',
'silo' => 'model/mesh',
'vrml' => 'model/vrml',
'wrl' => 'model/vrml',
'mime' => 'www/mime',
'pdb' => 'chemical/x-pdb',
'xyz' => 'chemical/x-pdb',
'javascript' => 'application/javascript',
'form' => 'application/x-www-form-urlencoded',
'file' => 'multipart/form-data',
'xhtml-mobile' => 'application/vnd.wap.xhtml+xml',
'atom' => 'application/atom+xml',
'amf' => 'application/x-amf',
'wap' => ['text/vnd.wap.wml', 'text/vnd.wap.wmlscript', 'image/vnd.wap.wbmp'],
'wml' => 'text/vnd.wap.wml',
'wmlscript' => 'text/vnd.wap.wmlscript',
'wbmp' => 'image/vnd.wap.wbmp',
'woff' => 'application/x-font-woff',
'appcache' => 'text/cache-manifest',
'manifest' => 'text/cache-manifest',
'htc' => 'text/x-component',
'rdf' => 'application/xml',
'crx' => 'application/x-chrome-extension',
'oex' => 'application/x-opera-extension',
'xpi' => 'application/x-xpinstall',
'safariextz' => 'application/octet-stream',
'webapp' => 'application/x-web-app-manifest+json',
'vcf' => 'text/x-vcard',
'vtt' => 'text/vtt',
'mkv' => 'video/x-matroska',
'pkpass' => 'application/vnd.apple.pkpass',
'ajax' => 'text/html',
'bmp' => 'image/bmp',
];
/**
* Status code to send to the client
*
* @var int
*/
protected $_status = 200;
/**
* File object for file to be read out as response
*
* @var \SplFileInfo|null
*/
protected $_file;
/**
* File range. Used for requesting ranges of files.
*
* @var array<int>
*/
protected $_fileRange = [];
/**
* The charset the response body is encoded with
*
* @var string
*/
protected $_charset = 'UTF-8';
/**
* Holds all the cache directives that will be converted
* into headers when sending the request
*
* @var array<string, mixed>
*/
protected $_cacheDirectives = [];
/**
* Collection of cookies to send to the client
*
* @var \Cake\Http\Cookie\CookieCollection
*/
protected $_cookies;
/**
* Reason Phrase
*
* @var string
*/
protected $_reasonPhrase = 'OK';
/**
* Stream mode options.
*
* @var string
*/
protected $_streamMode = 'wb+';
/**
* Stream target or resource object.
*
* @var resource|string
*/
protected $_streamTarget = 'php://memory';
/**
* Constructor
*
* @param array<string, mixed> $options list of parameters to setup the response. Possible values are:
*
* - body: the response text that should be sent to the client
* - status: the HTTP status code to respond with
* - type: a complete mime-type string or an extension mapped in this class
* - charset: the charset for the response body
* @throws \InvalidArgumentException
*/
public function __construct(array $options = [])
{
$this->_streamTarget = $options['streamTarget'] ?? $this->_streamTarget;
$this->_streamMode = $options['streamMode'] ?? $this->_streamMode;
if (isset($options['stream'])) {
if (!$options['stream'] instanceof StreamInterface) {
throw new InvalidArgumentException('Stream option must be an object that implements StreamInterface');
}
$this->stream = $options['stream'];
} else {
$this->_createStream();
}
if (isset($options['body'])) {
$this->stream->write($options['body']);
}
if (isset($options['status'])) {
$this->_setStatus($options['status']);
}
if (!isset($options['charset'])) {
$options['charset'] = Configure::read('App.encoding');
}
$this->_charset = $options['charset'];
$type = 'text/html';
if (isset($options['type'])) {
$type = $this->resolveType($options['type']);
}
$this->_setContentType($type);
$this->_cookies = new CookieCollection();
}
/**
* Creates the stream object.
*
* @return void
*/
protected function _createStream(): void
{
$this->stream = new Stream($this->_streamTarget, $this->_streamMode);
}
/**
* Formats the Content-Type header based on the configured contentType and charset
* the charset will only be set in the header if the response is of type text/*
*
* @param string $type The type to set.
* @return void
*/
protected function _setContentType(string $type): void
{
if (in_array($this->_status, [304, 204], true)) {
$this->_clearHeader('Content-Type');
return;
}
$allowed = [
'application/javascript', 'application/xml', 'application/rss+xml',
];
$charset = false;
if (
$this->_charset &&
(
strpos($type, 'text/') === 0 ||
in_array($type, $allowed, true)
)
) {
$charset = true;
}
if ($charset && strpos($type, ';') === false) {
$this->_setHeader('Content-Type', "{$type}; charset={$this->_charset}");
} else {
$this->_setHeader('Content-Type', $type);
}
}
/**
* Return an instance with an updated location header.
*
* If the current status code is 200, it will be replaced
* with 302.
*
* @param string $url The location to redirect to.
* @return static A new response with the Location header set.
*/
public function withLocation(string $url)
{
$new = $this->withHeader('Location', $url);
if ($new->_status === 200) {
$new->_status = 302;
}
return $new;
}
/**
* Sets a header.
*
* @phpstan-param non-empty-string $header
* @param string $header Header key.
* @param string $value Header value.
* @return void
*/
protected function _setHeader(string $header, string $value): void
{
$normalized = strtolower($header);
$this->headerNames[$normalized] = $header;
$this->headers[$header] = [$value];
}
/**
* Clear header
*
* @phpstan-param non-empty-string $header
* @param string $header Header key.
* @return void
*/
protected function _clearHeader(string $header): void
{
$normalized = strtolower($header);
if (!isset($this->headerNames[$normalized])) {
return;
}
$original = $this->headerNames[$normalized];
unset($this->headerNames[$normalized], $this->headers[$original]);
}
/**
* Gets the response status code.
*
* The status code is a 3-digit integer result code of the server's attempt
* to understand and satisfy the request.
*
* @return int Status code.
*/
public function getStatusCode(): int
{
return $this->_status;
}
/**
* Return an instance with the specified status code and, optionally, reason phrase.
*
* If no reason phrase is specified, implementations MAY choose to default
* to the RFC 7231 or IANA recommended reason phrase for the response's
* status code.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated status and reason phrase.
*
* If the status code is 304 or 204, the existing Content-Type header
* will be cleared, as these response codes have no body.
*
* There are external packages such as `fig/http-message-util` that provide HTTP
* status code constants. These can be used with any method that accepts or
* returns a status code integer. However, keep in mind that these constants
* might include status codes that are now allowed which will throw an
* `\InvalidArgumentException`.
*
* @link https://tools.ietf.org/html/rfc7231#section-6
* @link https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
* @param int $code The 3-digit integer status code to set.
* @param string $reasonPhrase The reason phrase to use with the
* provided status code; if none is provided, implementations MAY
* use the defaults as suggested in the HTTP specification.
* @return static
* @throws \InvalidArgumentException For invalid status code arguments.
*/
public function withStatus($code, $reasonPhrase = '')
{
$new = clone $this;
$new->_setStatus($code, $reasonPhrase);
return $new;
}
/**
* Modifier for response status
*
* @param int $code The status code to set.
* @param string $reasonPhrase The response reason phrase.
* @return void
* @throws \InvalidArgumentException For invalid status code arguments.
*/
protected function _setStatus(int $code, string $reasonPhrase = ''): void
{
if ($code < static::STATUS_CODE_MIN || $code > static::STATUS_CODE_MAX) {
throw new InvalidArgumentException(sprintf(
'Invalid status code: %s. Use a valid HTTP status code in range 1xx - 5xx.',
$code
));
}
$this->_status = $code;
if ($reasonPhrase === '' && isset($this->_statusCodes[$code])) {
$reasonPhrase = $this->_statusCodes[$code];
}
$this->_reasonPhrase = $reasonPhrase;
// These status codes don't have bodies and can't have content-types.
if (in_array($code, [304, 204], true)) {
$this->_clearHeader('Content-Type');
}
}
/**
* Gets the response reason phrase associated with the status code.
*
* Because a reason phrase is not a required element in a response
* status line, the reason phrase value MAY be null. Implementations MAY
* choose to return the default RFC 7231 recommended reason phrase (or those
* listed in the IANA HTTP Status Code Registry) for the response's
* status code.
*
* @link https://tools.ietf.org/html/rfc7231#section-6
* @link https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
* @return string Reason phrase; must return an empty string if none present.
*/
public function getReasonPhrase(): string
{
return $this->_reasonPhrase;
}
/**
* Sets a content type definition into the map.
*
* E.g.: setTypeMap('xhtml', ['application/xhtml+xml', 'application/xhtml'])
*
* This is needed for RequestHandlerComponent and recognition of types.
*
* @param string $type Content type.
* @param array<string>|string $mimeType Definition of the mime type.
* @return void
*/
public function setTypeMap(string $type, $mimeType): void
{
$this->_mimeTypes[$type] = $mimeType;
}
/**
* Returns the current content type.
*
* @return string
*/
public function getType(): string
{
$header = $this->getHeaderLine('Content-Type');
if (strpos($header, ';') !== false) {
return explode(';', $header)[0];
}
return $header;
}
/**
* Get an updated response with the content type set.
*
* If you attempt to set the type on a 304 or 204 status code response, the
* content type will not take effect as these status codes do not have content-types.
*
* @param string $contentType Either a file extension which will be mapped to a mime-type or a concrete mime-type.
* @return static
*/
public function withType(string $contentType)
{
$mappedType = $this->resolveType($contentType);
$new = clone $this;
$new->_setContentType($mappedType);
return $new;
}
/**
* Translate and validate content-types.
*
* @param string $contentType The content-type or type alias.
* @return string The resolved content-type
* @throws \InvalidArgumentException When an invalid content-type or alias is used.
*/
protected function resolveType(string $contentType): string
{
$mapped = $this->getMimeType($contentType);
if ($mapped) {
return is_array($mapped) ? current($mapped) : $mapped;
}
if (strpos($contentType, '/') === false) {
throw new InvalidArgumentException(sprintf('"%s" is an invalid content type.', $contentType));
}
return $contentType;
}
/**
* Returns the mime type definition for an alias
*
* e.g `getMimeType('pdf'); // returns 'application/pdf'`
*
* @param string $alias the content type alias to map
* @return array|string|false String mapped mime type or false if $alias is not mapped
*/
public function getMimeType(string $alias)
{
return $this->_mimeTypes[$alias] ?? false;
}
/**
* Maps a content-type back to an alias
*
* e.g `mapType('application/pdf'); // returns 'pdf'`
*
* @param array|string $ctype Either a string content type to map, or an array of types.
* @return array|string|null Aliases for the types provided.
*/
public function mapType($ctype)
{
if (is_array($ctype)) {
return array_map([$this, 'mapType'], $ctype);
}
foreach ($this->_mimeTypes as $alias => $types) {
if (in_array($ctype, (array)$types, true)) {
return $alias;
}
}
return null;
}
/**
* Returns the current charset.
*
* @return string
*/
public function getCharset(): string
{
return $this->_charset;
}
/**
* Get a new instance with an updated charset.
*
* @param string $charset Character set string.
* @return static
*/
public function withCharset(string $charset)
{
$new = clone $this;
$new->_charset = $charset;
$new->_setContentType($this->getType());
return $new;
}
/**
* Create a new instance with headers to instruct the client to not cache the response
*
* @return static
*/
public function withDisabledCache()
{
return $this->withHeader('Expires', 'Mon, 26 Jul 1997 05:00:00 GMT')
->withHeader('Last-Modified', gmdate(DATE_RFC7231))
->withHeader('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0');
}
/**
* Create a new instance with the headers to enable client caching.
*
* @param string|int $since a valid time since the response text has not been modified
* @param string|int $time a valid time for cache expiry
* @return static
*/
public function withCache($since, $time = '+1 day')
{
if (!is_int($time)) {
$time = strtotime($time);
if ($time === false) {
throw new InvalidArgumentException(
'Invalid time parameter. Ensure your time value can be parsed by strtotime'
);
}
}
return $this->withHeader('Date', gmdate(DATE_RFC7231, time()))
->withModified($since)
->withExpires($time)
->withSharable(true)
->withMaxAge($time - time());
}
/**
* Create a new instace with the public/private Cache-Control directive set.
*
* @param bool $public If set to true, the Cache-Control header will be set as public
* if set to false, the response will be set to private.
* @param int|null $time time in seconds after which the response should no longer be considered fresh.
* @return static
*/
public function withSharable(bool $public, ?int $time = null)
{
$new = clone $this;
unset($new->_cacheDirectives['private'], $new->_cacheDirectives['public']);
$key = $public ? 'public' : 'private';
$new->_cacheDirectives[$key] = true;
if ($time !== null) {
$new->_cacheDirectives['max-age'] = $time;
}
$new->_setCacheControl();
return $new;
}
/**
* Create a new instance with the Cache-Control s-maxage directive.
*
* The max-age is the number of seconds after which the response should no longer be considered
* a good candidate to be fetched from a shared cache (like in a proxy server).
*
* @param int $seconds The number of seconds for shared max-age
* @return static
*/
public function withSharedMaxAge(int $seconds)
{
$new = clone $this;
$new->_cacheDirectives['s-maxage'] = $seconds;
$new->_setCacheControl();
return $new;
}
/**
* Create an instance with Cache-Control max-age directive set.
*
* The max-age is the number of seconds after which the response should no longer be considered
* a good candidate to be fetched from the local (client) cache.
*
* @param int $seconds The seconds a cached response can be considered valid
* @return static
*/
public function withMaxAge(int $seconds)
{
$new = clone $this;
$new->_cacheDirectives['max-age'] = $seconds;
$new->_setCacheControl();
return $new;
}
/**
* Create an instance with Cache-Control must-revalidate directive set.
*
* Sets the Cache-Control must-revalidate directive.
* must-revalidate indicates that the response should not be served
* stale by a cache under any circumstance without first revalidating
* with the origin.
*
* @param bool $enable If boolean sets or unsets the directive.
* @return static
*/
public function withMustRevalidate(bool $enable)
{
$new = clone $this;
if ($enable) {
$new->_cacheDirectives['must-revalidate'] = true;
} else {
unset($new->_cacheDirectives['must-revalidate']);
}
$new->_setCacheControl();
return $new;
}
/**
* Helper method to generate a valid Cache-Control header from the options set
* in other methods
*
* @return void
*/
protected function _setCacheControl(): void
{
$control = '';
foreach ($this->_cacheDirectives as $key => $val) {
$control .= $val === true ? $key : sprintf('%s=%s', $key, $val);
$control .= ', ';
}
$control = rtrim($control, ', ');
$this->_setHeader('Cache-Control', $control);
}
/**
* Create a new instance with the Expires header set.
*
* ### Examples:
*
* ```
* // Will Expire the response cache now
* $response->withExpires('now')
*
* // Will set the expiration in next 24 hours
* $response->withExpires(new DateTime('+1 day'))
* ```
*
* @param \DateTimeInterface|string|int|null $time Valid time string or \DateTime instance.
* @return static
*/
public function withExpires($time)
{
$date = $this->_getUTCDate($time);
return $this->withHeader('Expires', $date->format(DATE_RFC7231));
}
/**
* Create a new instance with the Last-Modified header set.
*
* ### Examples:
*
* ```
* // Will Expire the response cache now
* $response->withModified('now')
*
* // Will set the expiration in next 24 hours
* $response->withModified(new DateTime('+1 day'))
* ```
*
* @param \DateTimeInterface|string|int $time Valid time string or \DateTime instance.
* @return static
*/
public function withModified($time)
{
$date = $this->_getUTCDate($time);
return $this->withHeader('Last-Modified', $date->format(DATE_RFC7231));
}
/**
* Sets the response as Not Modified by removing any body contents
* setting the status code to "304 Not Modified" and removing all
* conflicting headers
*
* *Warning* This method mutates the response in-place and should be avoided.
*
* @deprecated 4.4.0 Use `withNotModified()` instead.
* @return void
*/
public function notModified(): void
{
deprecationWarning(