The companion website to PHP Development in the Cloud is at cloudphp.net.
The website contains the source code of examples in the book and other related resources. There's also a list of PHP PaaS that might be useful if you're looking at migrating to these services.
Also, thanks to Jason, Rafael and Michelangelo for the great reviews:
"The book provides an excellent overview of what the cloud is and isn't, and then how PHP developers can leverage it in our applications."
"Ivo and Vito did a very good job of bringing the topic into a PHP developer’s world in a very concise and objective manner, without leaving important platforms and concepts behind."
"Let me say the book is a fun read. You can take it up to your bedroom as late-night read, read during lunch or even in the garden when the kids are playing about."