Update October 2016:
You can now send JSON to Spin2Win Wheel using PHP. Check out the script here.
Built using Scalable Vector Graphics Spin2Win Wheel is a responsive, flexible, customisable, resolution independent spin wheel game whose outcomes you control.
Spin results, prizes, win/lose, number of spins and more can be controlled using JSON data. You can also customise the look and feel of Spin2Win Wheel to bring it in line with your brand or color scheme and it even has an anti-cheat mechanism to prevent players placing the wheel on a chosen segment.
The documentation is here.
Updates are here.