[bluGill]

If you work wit the code enough prsphi becomes as idiomatic as args. The question is which should be allowed to become idiomatic in the first place. Arguments is of course common enough across a lot of different projects that you can make a stronger argument that perhaps it should - and in fact it might be better as nobody thinks of the dictionary definition: "A discussion in which disagreement is expressed; a debate." when they see args.

I have never worked with phone numbers outside of a class assignment so prsphi is not something I would understand. However if I was in a codebase that worked with phone numbers often I'd probably get to know it and like the shortness.