Not that we are short on MongoDB and PHP tutorials, but PHP programmers seem to have fun with MongoDB:
In this article, I’ll introduce you to MongoDB, one of the new generation of schema-less database systems that is quickly gaining the attention of open source developers. Over the next few pages, I’ll guide you through the process of getting started with MongoDB, showing you how to install it, set up a data store, connect to it and read and write data using PHP. Let’s get started!
As these examples illustrate, MongoDB provides a solid, feature-rich implementation of a schema-less database system. Availability for different platforms, easy integration with PHP and other languages, and extensive documentation (plus a very cool interactive online shell for experimentation) make it ideal for developers looking for a modern, document-oriented database. Try it out sometime, and see what you think!