The big upgrade. All the way up to Symfony 7 and PHP 8.3

In this talk I explain how we started with a poorly tested legacy project with Symfony 3.4 and PHP 7.2 and we took it all the way up to Symfony 7 and PHP 8.3. We talk about all the steps that we took, all the tools that we used, the difficulties that we found along the way and the benefits that we received. The talk includes a lot of samples of the changes that we had to apply at all levels. If we could do it, you can (and should) do it!!

Transcript

1. THE BIG UPGRADE All the way up to Symfony 7 and PHP 8.3
2. I have been a software developer for more than 30 years. In the development space I have done everything: I have done games, e-commerce, APIs, backend, frontend, Android, SRE, DevOps... And I have worked with multiple languages and technologies: C++, PHP, Java, JavaScript, SQL, MongoDB, Docker… Carlos Granados PHP 100% Symfony 100%
3. https://fastdebug.io Looking for beta users!
4. https://github.com/php-static-analysis/attributes PHP STATIC ANALYSIS ATTRIBUTES
5. TABLE OF CONTENTS 01 Current status 02 Preparation 03 Execution 04 Conclusions
6. CURRENT STATUS 01
7. WizAI was founded in 2001 and its focus is on digital signage and intelligent information systems. They provide the right display hardware for their customers and their CMS software wizperZone and enable users to display their digital content in an appealing way. THE COMPANY Started working there in July 2023
8. • Symfony 3.4 CURRENT STATUS • PHP 7.2 • REST API with an Angular NG frontend • Approx. 1K PHP files and 100K LOC • Almost no tests • No CI setup • No containers • No static analysis tools • No common coding standard • Very heterogeneous code base
9. PREPARATION 02
10. 90% DEDICATION 1 TESTS, 1 TOOLS HUMAN RESOURCES 4 MONTHS 2 DEVELOPERS
11. 01 – DOCKERISE
12. 02 – ADD PHPUNIT
13. 03 – CREATE CI PIPELINE
14. 04 – ADD MIGRATIONS BUNDLE
15. 05 – ADD FIXTURES BUNDLE
16. 06 – ADD BEHAT
17. 06 – ADD BEHAT
18. 06 – ADD BEHAT
19. 06 – ADD BEHAT - Very good integration with Symfony - Allows you to cover a lot of code with very few tests - Does not create real HTTP requests, it simulates them by directly calling the Symfony kernel - It is very fast
20. 07 – CODE COVERAGE
21. 08 – PHPSTAN
22. 09 – CODING STANDARD
23. 10 – RECTOR
24. SMALL PRS SINGLE PURPOSE MODUS OPERANDI WORK IN PARALLEL LITTLE STEPS
25. END RESULT - Database setup with migrations and fixtures - Good test code coverage with Behat and PHPUnit - CI pipeline in place - Static Analysis - PSR-12 compliant code base - Code fully updated to Symfony 3.4 and PHP 7.4 - Rector refactoring tool available
26. EXECUTION 03
27. 90% DEDICATION 4 MONTHS HUMAN RESOURCES 1 DEVELOPER
28. https://github.com/symfony/symfony/blob/5.0/UPGRADE-5.0.md https://symfonycasts.com/screencast/symfony6-upgrade/upgrade-symfony6 DOC RESOURCES https://symfony.com/doc/current/setup/upgrade_major.html
29. 01 – DEPRECATIONS
30. 01 – DEPRECATIONS
31. 01 – DEPRECATIONS
32. 02 – UPDATE VERSION
33. 02 – UPDATE VERSION
34. 03 – DEPENDENCY HELL
35. 03 – DEPENDENCY HELL
36. 03 – DEPENDENCY HELL
37. 03 – DEPENDENCY HELL
38. 04 – UPDATE YOUR CODE
39. 05 – SF4 - FOLDERS
40. 06 – SF4 - FLEX https://symfony.com/doc/current/setup/flex.html composer recipes:update
41. 07 – SF4 - PARAMETERS
42. 08 – SF4 - BEHAT
43. 09 – SF5 - MAILER
44. 10 – SF5 – PHP8
45. 11 – SF6 – ATTRIBUTES
46. SMALL PRS SINGLE PURPOSE MODUS OPERANDI WORK IN PARALLEL LITTLE STEPS
47. CURRENT MAIN/PROD NEXT STAGING MODUS OPERANDI NEXT+ BRANCH THREE VERSIONS
48. CONCLUSIONS 04
49. END RESULT - Well tested, modern and homogeneous code base - Faster code base - Safer code base - Allows us to use all the latest Symfony capabilities - Allows us to use the latest PHP constructs - Matches latest documentation - Matches current presentations
50. THANKS! carlos@fastdebug.io carlos-granados @carlos_granados