How can PHP developers ensure that their code follows best practices for front-end development?

PHP developers can ensure that their code follows best practices for front-end development by separating their PHP logic from their HTML markup. This can be achieved by using a templating engine like Twig or Blade to keep the presentation layer separate from the business logic. Additionally, developers should avoid mixing PHP and HTML code within the same file to improve code readability and maintainability.

// Example using Twig templating engine to separate PHP logic from HTML markup
$loader = new \Twig\Loader\FilesystemLoader('/path/to/templates');
$twig = new \Twig\Environment($loader);

$data = [
    'title' => 'Welcome to my website',
    'content' => 'This is some content for the page',
];

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