Are there any tutorials or resources available in German for learning about separating design from PHP in web development?

Separating design from PHP in web development involves using a templating system or framework to keep the HTML and CSS separate from the PHP logic. This helps to maintain clean and organized code, making it easier to manage and update the design of a website without having to modify the PHP files. One popular approach is to use a template engine like Twig or Blade, which allows you to create separate template files for the design elements and then include them in your PHP files using variables. This way, you can focus on writing the PHP logic in one file and the design elements in another, keeping them separate but still connected.

```php
// Example using Twig template engine
require_once 'vendor/autoload.php';

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

echo $twig->render('index.html', ['title' => 'Home Page']);
```

In this example, we are using Twig as the template engine to render the 'index.html' template file with the title variable passed in. This allows us to separate the design elements in the 'index.html' file from the PHP logic in the main PHP file.