We are in March 2013. Symfony 2.2 has just been released, PHP 5.5 is around the corner and I give my first public talk during a SymfonyLive: “42 best practices for Symfony” (in French).
10+ years later a lot of things changed for Symfony, for PHP but also regarding development in general.

Let’s take a moment to look back at those best practices and see which one are still relevant, obsolete or now completely wrong. This would be a nice opportunity to reflect on the evolutions our ecosystem experienced over the last decade.