How can PHP developers efficiently manage and manipulate PHP code within templates to maintain code cleanliness and organization?

One way PHP developers can efficiently manage and manipulate PHP code within templates is by using template engines like Twig or Blade. These template engines allow developers to separate PHP logic from HTML markup, making the code cleaner and more organized. Additionally, developers can use include files to modularize their code and avoid repetition.

<?php
// Using a template engine like Twig
$loader = new Twig_Loader_Filesystem('/path/to/templates');
$twig = new Twig_Environment($loader);

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