I’m wondering if any of you have had any experience with Adobe Flex. I have a current client that is looking to add a rather large new section to his website that is pretty complex that uses locations and maps and the like. He referenced something “similar” to what he was looking for, which was a client portal that was 100% designed in Flex.
One of the most famous ones at the moment is Ruby on Rails, I sometimes use Django, but to keep to your question about PHP there are also PHP frameworks such as Yii (Google PHP frameworks).
On a final note, I’d say don’t reinvent stuff though. If there is a map based something you mentioned, Google maps has a great API which won’t need Flash… maybe you can find all the components you need dotted around, ready made for you to use.