| ⇢ | C | Uri added | |
| ⇢ | B | Stream added | |
| ⇢ | A | ConnectionHeader added | |
| ⇢ | A | AccessControlExposeHeadersHeader added | |
| ⇢ | A | AccessControlAllowCredentialsHeader added | |
| ⇢ | A | ContentTypeHeader added | |
| ⇢ | A | ExpiresHeader added | |
| ⇢ | A | RetryAfterHeader added | |
| ⇢ | A | SunsetHeader added | |
| ⇢ | A | ContentMD5Header added | |
| ⋮ | view more | ||
| ⇢ | B | UploadedFile::moveTo() added | |
| ⇢ | B | Uri::__construct() added | |
| ⇢ | B | Uri::__toString() added | |
| ⇢ | B | Header::validateParametersByRegex() added | |
| ⇢ | B | server_request_uri() added | |
| ⇢ | B | SetCookieHeader::getFieldValue() added | |
| ⇢ | B | server_request_headers() added | |
| ⇢ | A | server_request_files() added | |
| ⇢ | A | SetCookieHeader::__construct() added | |
| ⇢ | A | HtmlResponse::createBody() added | |
| ⋮ | view more | ||
| A | ↛ | Message::__construct() removed | |
| A | ↛ | Message::addHeader() removed | |
| A | ↛ | ResponseFactory::createHtmlResponse() removed | |
| A | ↛ | ResponseFactory::createJsonResponse() removed | |
| A | ↛ | RequestFactory::createJsonRequest() removed | |
| A | ↛ | Message::normalizeHeaderName() removed | |