I'm interested in building a mobile site and have done some research on the subject. Everywhere I've looked contains information on either changing CSS upon detecting a mobile device, or setting up a sub-domain to redirect mobile browsers to.
My questions is: can I redirect mobile browsers to a different HTML page without having create a sub-domain? I'm thinking that it may be possible to do with a php page located alongside my HTML, CSS, etc. but I don't know that much about PHP (I'm currently learning the language now).