However, the Ruby language and Rails framework take a different approach than many ways PHP developers write applications. Ruby Rails is located at the base, and we will teach you the Ruby language from the beginning by building on the existing foundation of PHP. We'll explore Ruby through parallel code examples that illustrate the differences between languages, and help you understand the Ruby idioms and how they differ from popular PHP code and style. Besides serving as a guide to learning both Ruby and Rails from PHP developer perspective, this book includes two extensive reference chapters.