In this video course (consisting of over 80 lessons), I explored in depth the architecture and core components of Symfony 3, one of the most widely adopted PHP frameworks in enterprise environments.
Instead of a purely theoretical approach, I structured the material in the form of real-world use cases (recipes), demonstrating how to solve common architectural problems in backend development. The main topics included:
- MVC Architecture & Routing: Advanced route management and business logic separation using the Model-View-Controller pattern.
- Object-Relational Mapping (ORM): Integration and advanced use of Doctrine for modeling and managing relational databases through entities.
- Frontend Integration: Development of dynamic interfaces using the Twig template engine and implementation of asynchronous communication with Ajax forms.
- Form Management & Application Security: Implementation of complex server-side forms, with strict data validation rules and mitigation of major web vulnerabilities (CSRF, XSS, SQLi).
- Security & Authentication: Design of complex authentication systems, with granular management of users, permissions, and Role-Based Access Control (RBAC).
In addition to the core modules, this project allowed me to dissect every layer of the framework: from the HTTP lifecycle (deep management of Request/Response and JsonResponse), to the service-oriented architecture (Dependency Injection and Service Container), up to debugging best practices in enterprise environments using Xdebug and Symfony Profiler. This profound architectural study proved fundamental in rapidly mastering modern frameworks based on similar patterns, such as NestJS, Laravel, and Slim.