What you need for this book

In an intention to run most of the examples in the book, you will need a XAMPP or any other Linux-based web server, Apache Tomcat or Jetty, Java JDK (one of the latest versions), Apache Solr 4.x, and a Solr PHP client.

A couple of concepts covered in this book require additional software/tools such as the Tomcat add-on and ZooKeeper.