Generics we already have
A template calls getEmail() on an Order at three in the morning. The method returned array, the docblock said “array of User”, and eight months later someone put an Order in it. Everything was fine until it was not. PHP still has no generics and will not get them soon. Meanwhile PHPStan and Psalm shipped them anyway, in docblocks. Checked at analysis, not at runtime. For everyday backend work that turns out to be most of the value. ...