gistfile1.php

<?php
require_once('vendor/autoload.php');
use TFarla\Routing\Router;
use TFarla\Routing\Route;

$router = new Router([
    new Route('show user', '^/users/(?P<id>\d+)/$', ['GET'], function($matches) {
        return $matches['id'];
    }),
    new Route('list users', '^/users/$', ['GET'], function($matches) {
        return 'users';
    }),
    new Route('index', '^/$', ['GET'], function($matches) {
        return 'index';
    }),
    new Route('404', '', ['GET'], function($matches) {
        return '404 - not found';
    }),
]);

$uri = $_SERVER['REQUEST_URI'];
$method = $_SERVER['REQUEST_METHOD'];
try {
    list($route, $matches) = array_values($router->match($uri, $method));
    echo $route($matches);
} catch (\TFarla\Routing\RoutingException $routingException) {
    die('No Route found.');
}