The Google APIs Client Library for PHP allows developers to access Google APIs (e.g. Google+, Google Drive, YouTube) using PHP code. The library requires PHP 5.2.1 or higher and the PHP JSON extension. This client library is currently in Beta.
For several years millions have shared the places they've been using the Where I've Been website and Facebook application. The site also has an API (our Where I've Been API profile), which allows for much of the same functionality, such as searching countries, marking it visited and adding content such as a story or photo.