Isn't that just telling you that the web server has PHP loaded into it?
What's nice is that actually if you master computer science it counts even in web programming as long as there are non trivial problems to solve, but this happens 5% of the times compared of 95% when you write, for example, a compiler.
I don't care for it for more serious work, but if you just want to template up one or two pages without a lot of hassle, PHP is far better than Rails.
Sheesh.