New stratigility example, updated with PR zendframework/zend-stratigility#12

gistfile1.php

<?php
use Zend\Stratigility\MiddlewarePipe;
use Zend\Diactoros\Server;

require 'vendor/autoload.php';

$app    = new MiddlewarePipe();
$server = Server::createServer($app, $_SERVER, $_GET, $_POST, $_COOKIE, $_FILES);

// Injected for all the URL
$app->pipe('/', function ($req, $res, $next) {
    $res->write('Before!');
    return $next($req, $res);
});
// A specific page
$app->pipe('/foo', function ($req, $res, $next) {
    $res->write('Foo page!');
    return $next($req, $res);
});
// Injected for all the URL
$app->pipe('/', function ($req, $res, $next) {
    $res->write('After!');
    return $next($req, $res);
});

$server->listen();

/*
Running with "php -S 0.0.0.0:8000"

http://localhost:8000/
Before!After!Cannot GET http://localhost:8000/

http://localhost:8000/foo
Before!Foo page!After!Cannot GET http://localhost:8000/foo

http://localhost:8000/test
Before!After!Cannot GET http://localhost:8000/test  
*/