Is there a framework or something out there so that I can develop webpages in Ruby the same way I can as PHP. Something like
You can, with https://github.com/migrs/rack-server-pages
Instruction at that page.
Summarizing:
gem install rack-server-pages
Create config.ru in the root folder of your "application":
require 'rack-server-pages'
run Rack::ServerPages
Create public/index.erb:
<%= Time.now %>Hello rack!
execute rackup, your Ruby powered pages are ready to be served.
It also works with other application servers, for example, for passenger standalone, you just need to go to that folder and run passenger start.