template.php

<?php 
// ==============================================================
//	Copyright (C) 2014 Mark Vejvoda
//	Under GNU GPL v3.0
// ==============================================================
namespace riprunner;

require_once 'config_constants.php';
require __DIR__ . '/vendor/autoload.php';

//use Twig\Extensions\TextExtension;

class RiprunnerTwig {
    
    private $twig_template_loader = null;
    private $twig = null;
    
    public function getLoader() {
        if($this->twig_template_loader === null) {
            $this->twig_template_loader = new \Twig\Loader\FilesystemLoader(
                    __RIPRUNNER_ROOT__ . '/views');
            // This allows customized views to be placed in the folder below
            if(file_exists(__RIPRUNNER_ROOT__ . '/views-custom') === true) {
                $this->twig_template_loader->addPath(__RIPRUNNER_ROOT__ . '/views-custom', 'custom');
            }
            return $this->twig_template_loader;
        }
    }
    public function getEnvironment() {
        if($this->twig === null) {
            $this->twig = new \Twig\Environment($this->getLoader(), array(
            	'cache' => __RIPRUNNER_ROOT__ . '/temp/twig',
            	'debug' => true,
            	'strict_variables' => true
            ));
//            $this->twig->addExtension(new TextExtension());
        }
        return $this->twig;
    }
}

$riprunner_twig = new \riprunner\RiprunnerTwig();
$twig = $riprunner_twig->getEnvironment();
//$twig->addExtension(new \Twig_Extension_Debug());
//$twig->addExtension(new \Twig_Extensions_Extension_Text());