minimal_symfony.php

<?php

require '../vendor/autoload.php';

$request = Symfony\Component\HttpFoundation\Request::createFromGlobals();
$context = (new Symfony\Component\Routing\RequestContext())->fromRequest($request);
$configLocator = new Symfony\Component\Config\FileLocator(__DIR__ . '/../config');

$file = '../var/cache/container.php';
if (\file_exists($file)) {
    require_once $file;
    $container = new ProjectServiceContainer();
} else {
    $container = new Symfony\Component\DependencyInjection\ContainerBuilder();
    $container->addCompilerPass(new \Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass());
    $container->register('event_dispatcher', \Symfony\Component\EventDispatcher\EventDispatcher::class);

    $loader = new Symfony\Component\DependencyInjection\Loader\YamlFileLoader($container, $configLocator);
    $loader->load('services.yaml');
    $container->compile();

    \file_put_contents($file, (new Symfony\Component\DependencyInjection\Dumper\PhpDumper($container))->dump());
}

$file = '../var/cache/routes.php';
if (\file_exists($file)) {
    $matcher = new Symfony\Component\Routing\Matcher\CompiledUrlMatcher(require($file), $context);
} else {
    $loader = new Symfony\Component\Routing\Loader\YamlFileLoader($configLocator);
    $routes = $loader->load('routes.yaml');
    $dumper = new \Symfony\Component\Routing\Matcher\Dumper\CompiledUrlMatcherDumper($routes);
    \file_put_contents($file, $dumper->dump());

    $matcher = new Symfony\Component\Routing\Matcher\UrlMatcher($routes, $context);
}

$params = $matcher->matchRequest($request);
$request->attributes->add($params);

$response = $container->get($params['_controller'])($request);
$response->send();