What are some best practices for integrating template parsers with PHP code?

When integrating template parsers with PHP code, it is important to separate the presentation logic from the business logic. One best practice is to use a template engine like Twig or Blade to keep the HTML markup separate from the PHP code. This separation improves code readability, maintainability, and scalability.

<?php
// Include the Twig autoload file
require_once 'vendor/autoload.php';

// Create a new Twig loader and set the templates directory
$loader = new Twig_Loader_Filesystem('path/to/templates');

// Create a new Twig environment with the loader
$twig = new Twig_Environment($loader);

// Render a template with variables
echo $twig->render('index.html', ['title' => 'Welcome to our website']);