Web page creation script

I want a PHP script to automatically create web pages based on location. So, I want to have some text, with the option to vary either key words or phrases so that each page is unique and I want the ability to create pages by location, whether it be city, state, county or whatever. So, if we were creating pages for best red widgets, the page title might be best red widgets in Dallas with the page name being [login to view URL] We would also want, as I mentioned before to have the ability to create unique text on each page. Here are websites that are doing this kind of thing: [login to view URL] [login to view URL] [login to view URL] [login to view URL]