Message implements MessageInterface

Default implementation for the MessageInterface of the PSR-7 standard It is the base for any request or response for PSR-7.

Highly inspired by https://github.com/phly/http/

Internal

Note that this is not public API yet.

Table of Contents

Interfaces

MessageInterface

Properties

$body  : StreamInterface|null
The body as a Stream object
$headers  : array<string|int, mixed>
Associative array containing all headers of this Message This is a mixed-case list of the headers (as due to the specification)
$lowercasedHeaderNames  : array<string|int, mixed>
Lowercased version of all headers, in order to check if a header is set or not this way a lot of checks are easier to be set
$protocolVersion  : string
The HTTP Protocol version, defaults to 1.1

Methods

filter()  : string
Filter a header value
getBody()  : StreamInterface
Gets the body of the message.
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, mixed>
Retrieves all message header values.
getProtocolVersion()  : string
Retrieves the HTTP protocol version as a string.
hasHeader()  : bool
Checks if a header exists by the given case-insensitive name.
isValidHeaderValue()  : bool
Checks if an HTTP header value is valid.
validateHeaderName()  : void
Check whether a header name is valid and throw an exception.
withAddedHeader()  : static
Return an instance with the specified header appended with the given value.
withBody()  : static
Return an instance with the specified message body.
withHeader()  : static
Return an instance with the provided value replacing the specified header.
withoutHeader()  : static
Return an instance without the specified header.
withProtocolVersion()  : static
Return an instance with the specified HTTP protocol version.
arrayContainsOnlyStrings()  : bool
Helper function to test if an array contains only strings
assertHeaders()  : void
Ensure header names and values are valid.
filterHeaders()  : array<string|int, mixed>
Filter a set of headers to ensure they are in the correct internal format.
validateHeaderValues()  : void
Assert that the provided header values are valid.

Properties

$body

The body as a Stream object

protected StreamInterface|null $body = null

$headers

Associative array containing all headers of this Message This is a mixed-case list of the headers (as due to the specification)

protected array<string|int, mixed> $headers = []

$lowercasedHeaderNames

Lowercased version of all headers, in order to check if a header is set or not this way a lot of checks are easier to be set

protected array<string|int, mixed> $lowercasedHeaderNames = []

$protocolVersion

The HTTP Protocol version, defaults to 1.1

protected string $protocolVersion = '1.1'

Methods

filter()

Filter a header value

public filter(string $value) : string

Ensures CRLF header injection vectors are filtered.

Per RFC 7230, only VISIBLE ASCII characters, spaces, and horizontal tabs are allowed in values; header continuations MUST consist of a single CRLF sequence followed by a space or horizontal tab.

This method filters any values not allowed from the string, and is lossy.

Parameters
$value : string
Tags
see
http://en.wikipedia.org/wiki/HTTP_response_splitting
todo:

Unused? And why is this public? Maybe align with zend-diactoros again

Return values
string

getBody()

Gets the body of the message.

public getBody() : StreamInterface
Return values
StreamInterface —

Returns the body as a stream.

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, mixed>

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, mixed> —

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.

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.

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.

isValidHeaderValue()

Checks if an HTTP header value is valid.

public isValidHeaderValue(string $value) : bool

Per RFC 7230, only VISIBLE ASCII characters, spaces, and horizontal tabs are allowed in values; header continuations MUST consist of a single CRLF sequence followed by a space or horizontal tab.

Parameters
$value : string
Tags
see
http://en.wikipedia.org/wiki/HTTP_response_splitting
todo:

Review. Should be protected / private, maybe align with zend-diactoros again

Return values
bool

validateHeaderName()

Check whether a header name is valid and throw an exception.

public validateHeaderName(string $name) : void
Parameters
$name : string
Tags
see
https://tools.ietf.org/html/rfc7230#section-3.2
throws
InvalidArgumentException
todo:

Review. Should be protected / private, maybe align with zend-diactoros again

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).

Tags
throws
InvalidArgumentException

for invalid header names or values.

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
Tags
throws
InvalidArgumentException

When the body is not valid.

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).

Tags
throws
InvalidArgumentException

for invalid header names or values.

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

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

arrayContainsOnlyStrings()

Helper function to test if an array contains only strings

protected arrayContainsOnlyStrings(array<string|int, mixed> $data) : bool
Parameters
$data : array<string|int, mixed>
Return values
bool

assertHeaders()

Ensure header names and values are valid.

protected assertHeaders(array<string|int, mixed> $headers) : void
Parameters
$headers : array<string|int, mixed>
Tags
throws
InvalidArgumentException

filterHeaders()

Filter a set of headers to ensure they are in the correct internal format.

protected filterHeaders(array<string|int, mixed> $originalHeaders) : array<string|int, mixed>

Used by message constructors to allow setting all initial headers at once.

Parameters
$originalHeaders : array<string|int, mixed>

Headers to filter.

Return values
array<string|int, mixed> —

Filtered headers and names.

validateHeaderValues()

Assert that the provided header values are valid.

protected validateHeaderValues(array<string|int, string> $values) : void
Parameters
$values : array<string|int, string>
Tags
see
https://tools.ietf.org/html/rfc7230#section-3.2
throws
InvalidArgumentException 

        

        
    




    

    

                            

            

                            
    

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