In my humble opinion the best available php platform is "API Platform". I have tried a lot of backend frameworks in the last 10 years, and that is one of the best, at least in the PHP ecosystem. It's based on Symfony, it supports plenty of features like Swagger docs, Rest API, GraphQL. You can plugin React Admin to have a full admin in no time. But the best part in my opinion it's how you can easily extend the backend taking advantage of the ORM Doctrine (which is one of the most mature available across all technologies) and all the plugins of Symfony. The fact that the Doctrine entities are in automatic relation and they can be exposed as GraphQL it's a big win if you have a complex database. It is also possible to reverse engineering an existing database and create automatically all the entities, admin, restapi, graphql endpoints ... welcome to the future :)