ServerRequestInterface
extends
RequestInterface
in
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.
Table of Contents
- getAttribute() : mixed
- Retrieve a single derived request attribute.
- getAttributes() : array<string|int, mixed>
- Retrieve attributes derived from the request.
- getBody() : StreamInterface
- Gets the body of the message.
- getCookieParams() : array<string|int, mixed>
- Retrieve cookies.
- getHeader() : array<string|int, string>
- Retrieves a message header value by the given case-insensitive name.
- getHeaderLine() : string
- Retrieves a comma-separated string of the values for a single header.
- getHeaders() : array<string|int, array<string|int, string>>
- Retrieves all message header values.
- getMethod() : string
- Retrieves the HTTP method of the request.
- getParsedBody() : null|array<string|int, mixed>|object
- Retrieve any parameters provided in the request body.
- getProtocolVersion() : string
- Retrieves the HTTP protocol version as a string.
- getQueryParams() : array<string|int, mixed>
- Retrieve query string arguments.
- getRequestTarget() : string
- Retrieves the message's request target.
- getServerParams() : array<string|int, mixed>
- Retrieve server parameters.
- getUploadedFiles() : array<string|int, mixed>
- Retrieve normalized file upload data.
- getUri() : UriInterface
- Retrieves the URI instance.
- hasHeader() : bool
- Checks if a header exists by the given case-insensitive name.
- withAddedHeader() : static
- Return an instance with the specified header appended with the given value.
- withAttribute() : static
- Return an instance with the specified derived request attribute.
- withBody() : static
- Return an instance with the specified message body.
- withCookieParams() : static
- Return an instance with the specified cookies.
- withHeader() : static
- Return an instance with the provided value replacing the specified header.
- withMethod() : static
- Return an instance with the provided HTTP method.
- withoutAttribute() : static
- Return an instance that removes the specified derived request attribute.
- withoutHeader() : static
- Return an instance without the specified header.
- withParsedBody() : static
- Return an instance with the specified body parameters.
- withProtocolVersion() : static
- Return an instance with the specified HTTP protocol version.
- withQueryParams() : static
- Return an instance with the specified query string arguments.
- withRequestTarget() : static
- Return an instance with the specific request-target.
- withUploadedFiles() : static
- Create a new instance with the specified uploaded files.
- withUri() : static
- Returns an instance with the provided URI.
Methods
getAttribute()
Retrieve a single derived request attribute.
public
getAttribute(string $name[, mixed $default = null ]) : mixed
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
- $name : string
-
The attribute name.
- $default : mixed = null
-
Default value to return if the attribute does not exist.
Tags
Return values
mixed —getAttributes()
Retrieve attributes derived from the request.
public
getAttributes() : array<string|int, mixed>
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 values
array<string|int, mixed> —Attributes derived from the request.
getBody()
Gets the body of the message.
public
getBody() : StreamInterface
Return values
StreamInterface —Returns the body as a stream.
getCookieParams()
Retrieve cookies.
public
getCookieParams() : array<string|int, mixed>
Retrieves cookies sent by the client to the server.
The data MUST be compatible with the structure of the $_COOKIE superglobal.
Return values
array<string|int, mixed> —getHeader()
Retrieves a message header value by the given case-insensitive name.
public
getHeader(string $name) : array<string|int, string>
This method returns an array of all the header values of the given case-insensitive header name.
If the header does not appear in the message, this method MUST return an empty array.
Parameters
- $name : string
-
Case-insensitive header field name.
Return values
array<string|int, string> —An array of string values as provided for the given header. If the header does not appear in the message, this method MUST return an empty array.
getHeaderLine()
Retrieves a comma-separated string of the values for a single header.
public
getHeaderLine(string $name) : string
This method returns all of the header values of the given case-insensitive header name as a string concatenated together using a comma.
NOTE: Not all header values may be appropriately represented using comma concatenation. For such headers, use getHeader() instead and supply your own delimiter when concatenating.
If the header does not appear in the message, this method MUST return an empty string.
Parameters
- $name : string
-
Case-insensitive header field name.
Return values
string —A string of values as provided for the given header concatenated together using a comma. If the header does not appear in the message, this method MUST return an empty string.
getHeaders()
Retrieves all message header values.
public
getHeaders() : array<string|int, array<string|int, string>>
The keys represent the header name as it will be sent over the wire, and each value is an array of strings associated with the header.
// Represent the headers as a string
foreach ($message->getHeaders() as $name => $values) {
echo $name . ": " . implode(", ", $values);
}
// Emit headers iteratively:
foreach ($message->getHeaders() as $name => $values) {
foreach ($values as $value) {
header(sprintf('%s: %s', $name, $value), false);
}
}
While header names are not case-sensitive, getHeaders() will preserve the exact case in which headers were originally specified.
Return values
array<string|int, array<string|int, string>> —Returns an associative array of the message's headers. Each key MUST be a header name, and each value MUST be an array of strings for that header.
getMethod()
Retrieves the HTTP method of the request.
public
getMethod() : string
Return values
string —Returns the request method.
getParsedBody()
Retrieve any parameters provided in the request body.
public
getParsedBody() : null|array<string|int, mixed>|object
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 values
null|array<string|int, mixed>|object —The deserialized body parameters, if any. These will typically be an array or object.
getProtocolVersion()
Retrieves the HTTP protocol version as a string.
public
getProtocolVersion() : string
The string MUST contain only the HTTP version number (e.g., "1.1", "1.0").
Return values
string —HTTP protocol version.
getQueryParams()
Retrieve query string arguments.
public
getQueryParams() : array<string|int, mixed>
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 values
array<string|int, mixed> —getRequestTarget()
Retrieves the message's request target.
public
getRequestTarget() : string
Retrieves the message's request-target either as it will appear (for clients), as it appeared at request (for servers), or as it was specified for the instance (see withRequestTarget()).
In most cases, this will be the origin-form of the composed URI, unless a value was provided to the concrete implementation (see withRequestTarget() below).
If no URI is available, and no request-target has been specifically provided, this method MUST return the string "/".
Return values
string —getServerParams()
Retrieve server parameters.
public
getServerParams() : array<string|int, mixed>
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 values
array<string|int, mixed> —getUploadedFiles()
Retrieve normalized file upload data.
public
getUploadedFiles() : array<string|int, mixed>
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 values
array<string|int, mixed> —An array tree of UploadedFileInterface instances; an empty array MUST be returned if no data is present.
getUri()
Retrieves the URI instance.
public
getUri() : UriInterface
This method MUST return a UriInterface instance.
Tags
Return values
UriInterface —Returns a UriInterface instance representing the URI of the request.
hasHeader()
Checks if a header exists by the given case-insensitive name.
public
hasHeader(string $name) : bool
Parameters
- $name : string
-
Case-insensitive header field name.
Return values
bool —Returns true if any header names match the given header name using a case-insensitive string comparison. Returns false if no matching header name is found in the message.
withAddedHeader()
Return an instance with the specified header appended with the given value.
public
withAddedHeader(string $name, string|array<string|int, string> $value) : static
Existing values for the specified header will be maintained. The new value(s) will be appended to the existing list. If the header did not exist previously, it will be added.
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 new header and/or value.
Parameters
- $name : string
-
Case-insensitive header field name to add.
- $value : string|array<string|int, string>
-
Header value(s).
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Return values
static —withAttribute()
Return an instance with the specified derived request attribute.
public
withAttribute(string $name, mixed $value) : static
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
- $name : string
-
The attribute name.
- $value : mixed
-
The value of the attribute.
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Return values
static —withBody()
Return an instance with the specified message body.
public
withBody(StreamInterface $body) : static
The body MUST be a StreamInterface object.
This method MUST be implemented in such a way as to retain the immutability of the message, and MUST return a new instance that has the new body stream.
Parameters
- $body : StreamInterface
-
Body.
Tags
Return values
static —withCookieParams()
Return an instance with the specified cookies.
public
withCookieParams(array<string|int, mixed> $cookies) : static
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
- $cookies : array<string|int, mixed>
-
Array of key/value pairs representing cookies.
Return values
static —withHeader()
Return an instance with the provided value replacing the specified header.
public
withHeader(string $name, string|array<string|int, string> $value) : static
While header names are case-insensitive, the casing of the header will be preserved by this function, and returned from getHeaders().
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 new and/or updated header and value.
Parameters
- $name : string
-
Case-insensitive header field name.
- $value : string|array<string|int, string>
-
Header value(s).
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Return values
static —withMethod()
Return an instance with the provided HTTP method.
public
withMethod(string $method) : static
While HTTP method names are typically all uppercase characters, HTTP method names are case-sensitive and thus implementations SHOULD NOT modify the given string.
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 changed request method.
Parameters
- $method : string
-
Case-sensitive method.
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Return values
static —withoutAttribute()
Return an instance that removes the specified derived request attribute.
public
withoutAttribute(string $name) : static
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
- $name : string
-
The attribute name.
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Return values
static —withoutHeader()
Return an instance without the specified header.
public
withoutHeader(string $name) : static
Header resolution MUST be done without case-sensitivity.
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 named header.
Parameters
- $name : string
-
Case-insensitive header field name to remove.
Return values
static —withParsedBody()
Return an instance with the specified body parameters.
public
withParsedBody(null|array<string|int, mixed>|object $data) : static
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
- $data : null|array<string|int, mixed>|object
-
The deserialized body data. This will typically be in an array or object.
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Return values
static —withProtocolVersion()
Return an instance with the specified HTTP protocol version.
public
withProtocolVersion(string $version) : static
The version string MUST contain only the HTTP version number (e.g., "1.1", "1.0").
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 new protocol version.
Parameters
- $version : string
-
HTTP protocol version
Return values
static —withQueryParams()
Return an instance with the specified query string arguments.
public
withQueryParams(array<string|int, mixed> $query) : static
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
- $query : array<string|int, mixed>
-
Array of query string arguments, typically from $_GET.
Return values
static —withRequestTarget()
Return an instance with the specific request-target.
public
withRequestTarget(mixed $requestTarget) : static
If the request needs a non-origin-form request-target — e.g., for specifying an absolute-form, authority-form, or asterisk-form — this method may be used to create an instance with the specified request-target, verbatim.
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 changed request target.
Parameters
- $requestTarget : mixed
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Return values
static —withUploadedFiles()
Create a new instance with the specified uploaded files.
public
withUploadedFiles(array<string|int, mixed> $uploadedFiles) : static
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
- $uploadedFiles : array<string|int, mixed>
-
An array tree of UploadedFileInterface instances.
Tags
Return values
static —withUri()
Returns an instance with the provided URI.
public
withUri(UriInterface $uri[, bool $preserveHost = false ]) : static
This method MUST update the Host header of the returned request by default if the URI contains a host component. If the URI does not contain a host component, any pre-existing Host header MUST be carried over to the returned request.
You can opt-in to preserving the original state of the Host header by
setting $preserveHost
to true
. When $preserveHost
is set to
true
, this method interacts with the Host header in the following ways:
- If the Host header is missing or empty, and the new URI contains a host component, this method MUST update the Host header in the returned request.
- If the Host header is missing or empty, and the new URI does not contain a host component, this method MUST NOT update the Host header in the returned request.
- If a Host header is present and non-empty, this method MUST NOT update the Host header in the returned request.
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 new UriInterface instance.
Parameters
- $uri : UriInterface
-
New request URI to use.
- $preserveHost : bool = false
-
Preserve the original state of the Host header.