[makeitdouble]

IMHO this very discussion factors in whether you'll want a PHP stack or not.

If you're looking for pragmatic devs that don't care much about the trends, the community or peers' general opinion about a technology, going with PHP will get you this type in spades. Especially if you're looking for experienced engineers.

If you want devs that care about thoughtful designs, elegant solutions and want to enjoy the community, it will be a lot more difficult (not impossible, but it's an uphill battle)

And this has little to do with PHP's viability per se, there's just so much baggage that most devs will self select in one side or another. A language's base design philosophy matters, and it's always better to chose a stack that matches your own philosophy.