Raphael Stolt has done a review of a book that's helping bridge the gap between Rails and PHP for those already using the PHP language. The book "Rails for PHP Developers" (part of the Pragmatic Programmers series of books, authored by Derek DeVries and Mike Naberezny) is a guide to learning Ruby on Rails from a PHP developer's perspective.
The e-book version of the Pragmatic Programmers release Rails for PHP Developers written by Derek DeVries and Mike Naberezny occupies now some of my scarce hard drive space for several months, and today I managed to hit the last page of it. In case you're interested in knowing if it's worthy to sacrifice some rare hard drive or bookshelf space for this book read on.
He goes through the three parts of the book - a look at the MVC pattern, teaching some of the details of Ruby and comparing the structure of the two languages to help PHP developers relate a bit more. Raphael gives it good marks for being a great guide to not only Ruby and Rails but to also making it accessible for PHP developers to make a smoother transition from one to the other if they're interested.