I envy the fast development cycles the PHP language developer team is doing. From five years until now, I’d say PHP has had a completely overhaul since the time I stopped web development.
As a long-time PHP developer, its way too fast. We're forced to constantly upgrade for features that don't really matter for most uses, but aren't backwards compatible.
As someone maintaining multiple 10+ year old PHP applications - after the migration to 7 things have been super easy/simple. Especially if you get Rector [0] involved.