At least I home I am free to use whatever I want. So I use Symphony2 ;) ... which adds verbosity and complexity to a language that still can't decide if 0 is something empty or just the number 0.
If someone asks for product X without a language specification, you're probably free to create it in any language you're comfortable (although admittedly it would be stupid for a client to allow this).
PHP is not faster to write, debug and deploy than most other languages. It is faster to write, debug and deploy if you know PHP well and language X not as well.