Is it recommended to output HTML using PHP, or are there better alternatives?

It is recommended to separate the logic (PHP) from the presentation (HTML) in order to maintain a clean and manageable codebase. This can be achieved by using a template engine like Twig or Blade, which allows you to write your HTML templates separately from your PHP logic.

// Using Twig as a template engine to separate PHP logic from HTML presentation
require_once 'vendor/autoload.php';

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

$data = [
    'title' => 'Hello, World!',
    'content' => 'This is a sample content.',
];

echo $twig->render('index.html', $data);