The VK Platform: http://vk.com/developers.php
This project is no longer supported by author. Feel free to fork it and fix bugs if SDK doesn't work.
Current version: 0.2.3
See an example: https://github.com/AndriiHeonia/VkPhpSdk/blob/master/example/index.php
The VK PHP SDK is released under the New BSD License: https://github.com/AndriiHeonia/vkPhpSdk/blob/master/license.txt