文章来源：红数位

// composer require "twig/twig"require 'vendor/autoload.php';
class Template {private $twig;
public function __construct() {$indexTemplate = '<img ' .'src="https://loremflickr.com/320/240">' .'<a href="{{link|escape}}">Next slide ?</a>';
// Default twig setup, simulate loading// index.html file from disk$loader = new Twig\Loader\ArrayLoader(['index.html' => $indexTemplate]);$this->twig = new Twig\Environment($loader);}
public function getNexSlideUrl() {$nextSlide = $_GET['nextSlide'];return filter_var($nextSlide, FILTER_VALIDATE_URL);   //验证是否获取的实参是否为真正的URL}
public function render() {echo $this->twig->render(   'index.html',['link' => $this->getNexSlideUrl()]);}}
(new Template())->render();