SymfonyCasts (formerly KnpUniversity) is a US-based PHP / Symfony training platform run by Ryan Weaver, a Symfony core team member. The platform is the closest thing to an official video-tutorial source for the Symfony framework — Ryan's tutorials are the path most working Symfony developers learned the framework through.
The CourseFlix listing carries five SymfonyCasts titles: Symfony 5 Fundamentals — Services, Config & Environments, API Platform — Serious RESTful APIs, Messenger! Queue Work for Later, phpspec — Testing / Designing with a Bite, and the SymfonyCon 2018 Lisbon Conference Videos. Material is paid and aimed at PHP developers building production Symfony applications.
For broader content, see CourseFlix's Symfony and PHP category pages where SymfonyCasts material sits alongside the wider PHP teaching community.
