Interface ServerRequestInterface
- Psr\Http\Message\ServerRequestInterface implements Psr\Http\Message\RequestInterface
- Namespace: Psr\Http\Message
- Located at Http/Message/ServerRequestInterface.php
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.
Direct known implementers
Methods Summary
-
getServerParams ( )
Retrieve server parameters.
-
getCookieParams ( )
Retrieve cookies.
-
withCookieParams ( array $cookies )
Return an instance with the specified cookies.
-
getQueryParams ( )
Retrieve query string arguments.
-
withQueryParams ( array $query )
Return an instance with the specified query string arguments.
-
getUploadedFiles ( )
Retrieve normalized file upload data.
-
withUploadedFiles ( array $uploadedFiles )
Create a new instance with the specified uploaded files.
-
getParsedBody ( )
Retrieve any parameters provided in the request body.
-
withParsedBody ( null|array|object $data )
Return an instance with the specified body parameters.
-
getAttributes ( )
Retrieve attributes derived from the request.
-
getAttribute ( string $name, mixed $default = null )
Retrieve a single derived request attribute.
-
withAttribute ( string $name, mixed $value )
Return an instance with the specified derived request attribute.
-
withoutAttribute ( string $name )
Return an instance that removes the specified derived request attribute.
Methods inherited from Psr\Http\Message\RequestInterface
Methods inherited from Psr\Http\Message\MessageInterface
Methods Details
array getServerParams ( )
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.
Returns
array |
array getCookieParams ( )
Retrieve cookies.
Retrieves cookies sent by the client to the server.
The data MUST be compatible with the structure of the $_COOKIE superglobal.
Returns
array |
static withCookieParams ( array $cookies )
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.
Parameters
array | $cookies | Array of key/value pairs representing cookies. |
Returns
static |
array getQueryParams ( )
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.
Returns
array |
static withQueryParams ( array $query )
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.
Parameters
array | $query | Array of query string arguments, typically from $_GET. |
Returns
static |
array getUploadedFiles ( )
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().
Returns
array An array tree of UploadedFileInterface instances; an empty array MUST be returned if no data is present. |
static withUploadedFiles ( array $uploadedFiles )
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.
Parameters
array | $uploadedFiles | An array tree of UploadedFileInterface instances. |
Returns
static |
Exceptions
InvalidArgumentException if an invalid structure is provided. |
null|array|object getParsedBody ( )
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.
Returns
null|array|object The deserialized body parameters, if any. These will typically be an array or object. |
static withParsedBody ( null|array|object $data )
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.
Parameters
null|array|object | $data | The deserialized body data. This will typically be in an array or object. |
Returns
static |
Exceptions
InvalidArgumentException if an unsupported argument type is provided. |
array getAttributes ( )
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.
Returns
array Attributes derived from the request. |
mixed getAttribute ( string $name, mixed $default = null )
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.
Parameters
string | $name | The attribute name. |
mixed | $default = null | Default value to return if the attribute does not exist. |
Returns
mixed |
See
static withAttribute ( string $name, mixed $value )
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.
Parameters
string | $name | The attribute name. |
mixed | $value | The value of the attribute. |
Returns
static |
See
static withoutAttribute ( string $name )
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.
Parameters
string | $name | The attribute name. |
Returns
static |