What are the potential pitfalls of storing layout information within PHP scripts?

Storing layout information within PHP scripts can make it difficult to separate the presentation layer from the business logic, leading to a lack of code organization and maintainability. To address this issue, it is recommended to use a templating engine like Twig or Blade to keep the layout separate from the PHP logic.

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

echo $twig->render('layout.twig', ['content' => 'Hello, World!']);