use Http\HttpRequest;

$request = new HttpRequest($_GET, $_POST, $_COOKIE, $_FILES, $_SERVER, file_get_contents('php://input'));

$request->getParameter($key, $defaultValue = null);
$request->getFile($key, $defaultValue = null);
$request->getCookie($key, $defaultValue = null);
$request->getParameters();
$request->getQueryParameters();
$request->getBodyParameters();
$request->getRawBody();
$request->getCookies();
$request->getFiles();
$request->getMethod();
$request->getHttpAccept();
$request->getReferer();
$request->getUserAgent();
$request->getIpAddress();
$request->isSecure();
$request->getQueryString();

use Http\HttpResponse;

$response =  new HttpResponse;

$response->setStatusCode($statusCode, $statusText = null);
$response->addHeader($name, $value);
$response->setHeader($name, $value);
$response->addCookie(Cookie $cookie);
$response->deleteCookie(Cookie $cookie);
$response->setContent($content);
$response->redirect($url);

$response->getHeaders();
$response->getContent();

foreach ($response->getHeaders() as $header) {
    header($header, false);
}

echo $response->getContent();

$cookieBuilder->setDefaultDomain($domain); // defaults to NULL
$cookieBuilder->setDefaultPath($path); // defaults to '/'
$cookieBuilder->setDefaultSecure($secure); // defaults to TRUE
$cookieBuilder->setDefaultHttpOnly($httpOnly); // defaults to TRUE
$cookieBuilder->build($name, $value); // returns the cookie object

$cookie->setValue($value);
$cookie->setMaxAge($seconds);
$cookie->setDomain($domain);
$cookie->setPath($path);
$cookie->setSecure($secure);
$cookie->setHttpOnly($httpOnly);

<?php

use Http\HttpRequest;
use Http\HttpResponse;
use Http\CookieBuilder;

$loader = require_once __DIR__ . '/vendor/autoload.php';

$cookieBuilder = new CookieBuilder;

// Disable the secure flag because this is only an example
$cookieBuilder->setDefaultSecure(false);

$request = new HttpRequest($_GET, $_POST, $_COOKIE, $_FILES, $_SERVER, file_get_contents('php://input'));
$response = new HttpResponse;

$content = '<h1>Hello World</h1>';
$content .= $request->getCookie('TestCookie', 'Cookie is not set.');

if ($request->getParameter('setCookie') === 'true') {
    $cookie = $cookieBuilder->build('TestCookie', 'Cookie is set.');
    $response->addCookie($cookie);
}

$response->setContent($content);

foreach ($response->getHeaders() as $header) {
    header($header);
}

echo $response->getContent();