Early pass at a PHP interface to the Wink Hub (http://www.winkapp.com/) API. Allows you to query the devices attached to the hub for their current state.
See wink.php for a simple example.
You need a client ID and secret to talk to the hub as well as your own user credentials. Right now Wink doesn't have a means to get a key (I've got a support ticket open with them), but some quick googling will turn up the key pair that the Android and IOS apps use.
Upcoming versions will support a wider range of connected devices (right now it falls back to a generic device class if it doesn't recognize the device type) and the ability to set device states.