Do you already know one of these languages? You know what they say about photography: the best camera is the one you have with you. The same goes for programmin

Do you already know one of these languages? You know what they say about photography: the best camera is the one you have with you. The same goes for programming: if you already know how to build something in PHP, there's not much sense trying to make the project in Ruby. If you know neither, try both of them for a short while and see which one you like better. It's really a 'what do you like better: apples or oranges' kind of question.