Programming languages are largely very similar, if you know one language it should not be a problem to pick up another language and write hello world code fairly quickly.
Writing a webserver in a language that offers libraries for it should also not be a problem and doable within a weekend.
If all you've got is a hammer, everything looks like a nail. If all you've got is a rock, you're going to be working even harder on pounding those nails, and god help you when you run into screws or bolts.
