silverstripe-framework/main.php

<?php

use SilverStripe\Control\HTTPRequestBuilder;
use SilverStripe\Core\AppKernel;
use SilverStripe\Core\HTTPApplication;
use SilverStripe\Core\Startup\ErrorControlChainMiddleware;

require __DIR__ . '/src/includes/autoload.php';

// Build request and detect flush
$request = HTTPRequestBuilder::createFromEnvironment();

// Default application
$kernel = new AppKernel(BASE_PATH);
$app = new HTTPApplication($kernel);
$app->addMiddleware(new ErrorControlChainMiddleware($app));
$response = $app->handle($request);
$response->output();