Header values

Supported headers

Accept
Accept-Charset
AcceptLanguage
Authorization
Content-Disposition
Content-Length
Content-Type
Cookie

Parsing header value

// A router request controller
function handleRequest (ServerRequestInterface $request) 
{
  $contentType = HeaderValueFactory::createFromMessage($response,
			HeaderField::CONTENT_TYPE);
	if ($contentType instanceof ContentTypeHeaderValue)
	{
		$mediaType = $contentType->getMediaType();
		// do something...
	}
}

References

[RFC 2616 Header Field Definitions](https://datatracker.ietf.org/doc/html/