And, dutifully, most PHP programmers don't bother using any particular style of recognizable programming. When in Rome...

Neither C nor PHP support functional programming well. They don't even acknowledge logic programming. But hey, you can use any style you want. As long as it's imperative.

I think the most multi-paradigm languages are certain lisps. As long as you only care about different declarative styles (basically the opposite of C), Haskell is surprisingly good: point-free programming is like stack-based programming and you can easily embed non-deterministic code as well. And you can write imperative code about as easily as writing functional code in PHP or C.

And if you need a function in several objects, there is now Traits.