Is the use of PHP3-based template systems like "fast template" considered outdated, and what other template systems are recommended for PHP development?

The use of PHP3-based template systems like "fast template" is considered outdated due to the advancements in PHP and the availability of more modern template engines like Twig, Blade, and Smarty. These newer template systems offer better performance, more features, and improved syntax for separating logic from presentation in PHP development.

// Example of using Twig template engine in PHP
require_once 'vendor/autoload.php';

$loader = new \Twig\Loader\FilesystemLoader('path/to/templates');
$twig = new \Twig\Environment($loader);

echo $twig->render('index.html', ['name' => 'John Doe']);