This presentation is about code quality, and finding bugs before they hit production. Also, PHPStan is great for finding problems caused by future Drupal updates, ahead of time.
I will show how to install and use PHPStan with Drupal code. In my examples, I will show how to analyze contrib modules and core for maintainers. I will also show in detail how to analyze custom, non-public code written by or for your organization.
As the last step, I will show examples for your GitLab CI pipelines. No worries if you don't use DevOps or continuous integration yet: I will explain and show all the steps thoroughly.
To follow the presentation, no coding or command line experience is needed, but an interest in technical topics is mandatory.