Not much to say about it. I simply do not enjoy working with the language. It feels icky to me, and I think PHP makes it exceptionally difficult to write good code. To this day I don't know what good PHP code looks like - often what people consider good PHP code looks just like Java, in which case I'd rather skip the PHP and write Java.
There are so many well designed languages out there. I just don't see the point in using PHP for anything complex.
I shy away from Python too, but that's because I don't like the idea of white space being syntax. The language seems reasonably sane, apart from maybe the constructors which are a bit odd.
I just have a problem with it. It's not rational:-)
Also, test-coverage and documentation (or lack there of) can sway my opinion pretty heavily.
Personally I think, there are tradeoffs. After many years of PHP, I'm happy to not code in PHP for last 4 years (except a cs project). But for example for a lot of money I would code in PHP again. Why not? I'm also reject non-compiled languages for backend in big projects.