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<?php namespace Psr\Http\Message; /** * Representation of an incoming, server-side HTTP request. * * Per the HTTP specification, this interface includes properties for * each of the following: * * - Protocol version * - HTTP method * - URI * - Headers * - Message body * * Additionally, it encapsulates all data as it has arrived to the * application from the CGI and/or PHP environment, including: * * - The values represented in $_SERVER. * - Any cookies provided (generally via $_COOKIE) * - Query string arguments (generally via $_GET, or as parsed via parse_str()) * - Upload files, if any (as represented by $_FILES) * - Deserialized body parameters (generally from $_POST) * * $_SERVER values MUST be treated as immutable, as they represent application * state at the time of request; as such, no methods are provided to allow * modification of those values. The other values provide such methods, as they * can be restored from $_SERVER or the request body, and may need treatment * during the application (e.g., body parameters may be deserialized based on * content type). * * Additionally, this interface recognizes the utility of introspecting a * request to derive and match additional parameters (e.g., via URI path * matching, decrypting cookie values, deserializing non-form-encoded body * content, matching authorization headers to users, etc). These parameters * are stored in an "attributes" property. * * Requests are considered immutable; all methods that might change state MUST * be implemented such that they retain the internal state of the current * message and return an instance that contains the changed state. */ interface ServerRequestInterface extends RequestInterface { /** * Retrieve server parameters. * * Retrieves data related to the incoming request environment, * typically derived from PHP's $_SERVER superglobal. The data IS NOT * REQUIRED to originate from $_SERVER. * * @return array */ public function getServerParams(); /** * Retrieve cookies. * * Retrieves cookies sent by the client to the server. * * The data MUST be compatible with the structure of the $_COOKIE * superglobal. * * @return array */ public function getCookieParams(); /** * Return an instance with the specified cookies. * * The data IS NOT REQUIRED to come from the $_COOKIE superglobal, but MUST * be compatible with the structure of $_COOKIE. Typically, this data will * be injected at instantiation. * * This method MUST NOT update the related Cookie header of the request * instance, nor related values in the server params. * * 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 cookie values. * * @param array $cookies Array of key/value pairs representing cookies. * @return static */ public function withCookieParams(array $cookies); /** * Retrieve query string arguments. * * Retrieves the deserialized query string arguments, if any. * * Note: the query params might not be in sync with the URI or server * params. If you need to ensure you are only getting the original * values, you may need to parse the query string from `getUri()->getQuery()` * or from the `QUERY_STRING` server param. * * @return array */ public function getQueryParams(); /** * Return an instance with the specified query string arguments. * * These values SHOULD remain immutable over the course of the incoming * request. They MAY be injected during instantiation, such as from PHP's * $_GET superglobal, or MAY be derived from some other value such as the * URI. In cases where the arguments are parsed from the URI, the data * MUST be compatible with what PHP's parse_str() would return for * purposes of how duplicate query parameters are handled, and how nested * sets are handled. * * Setting query string arguments MUST NOT change the URI stored by the * request, nor the values in the server params. * * 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 query string arguments. * * @param array $query Array of query string arguments, typically from * $_GET. * @return static */ public function withQueryParams(array $query); /** * Retrieve normalized file upload data. * * This method returns upload metadata in a normalized tree, with each leaf * an instance of Psr\Http\Message\UploadedFileInterface. * * These values MAY be prepared from $_FILES or the message body during * instantiation, or MAY be injected via withUploadedFiles(). * * @return array An array tree of UploadedFileInterface instances; an empty * array MUST be returned if no data is present. */ public function getUploadedFiles(); /** * Create a new instance with the specified uploaded files. * * 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 body parameters. * * @param array $uploadedFiles An array tree of UploadedFileInterface instances. * @return static * @throws \InvalidArgumentException if an invalid structure is provided. */ public function withUploadedFiles(array $uploadedFiles); /** * Retrieve any parameters provided in the request body. * * If the request Content-Type is either application/x-www-form-urlencoded * or multipart/form-data, and the request method is POST, this method MUST * return the contents of $_POST. * * Otherwise, this method may return any results of deserializing * the request body content; as parsing returns structured content, the * potential types MUST be arrays or objects only. A null value indicates * the absence of body content. * * @return null|array|object The deserialized body parameters, if any. * These will typically be an array or object. */ public function getParsedBody(); /** * Return an instance with the specified body parameters. * * These MAY be injected during instantiation. * * If the request Content-Type is either application/x-www-form-urlencoded * or multipart/form-data, and the request method is POST, use this method * ONLY to inject the contents of $_POST. * * The data IS NOT REQUIRED to come from $_POST, but MUST be the results of * deserializing the request body content. Deserialization/parsing returns * structured data, and, as such, this method ONLY accepts arrays or objects, * or a null value if nothing was available to parse. * * As an example, if content negotiation determines that the request data * is a JSON payload, this method could be used to create a request * instance with the deserialized parameters. * * 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 body parameters. * * @param null|array|object $data The deserialized body data. This will * typically be in an array or object. * @return static * @throws \InvalidArgumentException if an unsupported argument type is * provided. */ public function withParsedBody($data); /** * Retrieve attributes derived from the request. * * The request "attributes" may be used to allow injection of any * parameters derived from the request: e.g., the results of path * match operations; the results of decrypting cookies; the results of * deserializing non-form-encoded message bodies; etc. Attributes * will be application and request specific, and CAN be mutable. * * @return array Attributes derived from the request. */ public function getAttributes(); /** * Retrieve a single derived request attribute. * * Retrieves a single derived request attribute as described in * getAttributes(). If the attribute has not been previously set, returns * the default value as provided. * * This method obviates the need for a hasAttribute() method, as it allows * specifying a default value to return if the attribute is not found. * * @see getAttributes() * @param string $name The attribute name. * @param mixed $default Default value to return if the attribute does not exist. * @return mixed */ public function getAttribute($name, $default = null); /** * Return an instance with the specified derived request attribute. * * This method allows setting a single derived request attribute as * described in getAttributes(). * * 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 attribute. * * @see getAttributes() * @param string $name The attribute name. * @param mixed $value The value of the attribute. * @return static */ public function withAttribute($name, $value); /** * Return an instance that removes the specified derived request attribute. * * This method allows removing a single derived request attribute as * described in getAttributes(). * * This method MUST be implemented in such a way as to retain the * immutability of the message, and MUST return an instance that removes * the attribute. * * @see getAttributes() * @param string $name The attribute name. * @return static */ public function withoutAttribute($name); }