PHP gained a lot of good feedback from scalar typing in version 7.0, and a lot of improvements are towards more OOP. I think it's a brilliant move because it's still backwards compatible with PHP 5, and even sometimes with PHP 4!
I still have one client with a 2010 code base. Tools like PHPComptibity and IDE scans can easily batch-fix most of them, but some PHP 4 code never needed any changes.