Skeleton app for Flight PHP 1.3.8 with Twig 3.x

flightphp-twig.php

<?php
// load composer autoloader
require dirname(__DIR__) . '/vendor/autoload.php';

// set paths for templates and cache
Flight::set('flight.views.path', dirname(__DIR__) . '/templates');
Flight::set('flight.compiled.views.path', dirname(__DIR__) . '/var/cache');

// set the view renderer to use twig. Before deploying to prod. activate the cache and
// set the web user allowed to read/write from/to the folder.
$loader = new \Twig\Loader\FilesystemLoader(Flight::get('flight.views.path'));
$twigConfig = array(
	'cache'	=>	Flight::get('flight.compiled.views.path'),
	'cache'	=>	false,
	'debug'	=>	true,
);

// sets twig as the view handler for Flight.
Flight::register('view', '\Twig\Environment', array($loader, $twigConfig), function($twig) {
	$twig->addExtension(new \Twig\Extension\DebugExtension()); // add the debug extension
});

// map the call for ease of use.
Flight::map('render', function($template, $data){
	echo Flight::view()->render($template, $data);
});

// set default route
Flight::route('/*', function(){
    // render index.tpl (just some HTML code)
    Flight::render('index.tpl', array());
});

Flight::start();