Twig
Twig is a modern, secure, and flexible template engine for PHP, designed to separate presentation logic from business logic in web applications. It provides a clean syntax with features like template inheritance, filters, functions, and automatic escaping to prevent XSS attacks. Twig is widely used in PHP frameworks like Symfony and Drupal for rendering HTML, XML, or other text-based formats.
Developers should learn Twig when building PHP-based web applications that require maintainable and secure templates, especially in projects using Symfony or Drupal. It's ideal for scenarios where you need to enforce a clear separation between logic and presentation, such as in MVC architectures, and when you want to leverage features like template inheritance to reduce code duplication and improve reusability.