This practical guide book is for developers who are new to Sphinx, one of the most popular open source search engines. It is specifically focused on the Search feature of web applications. All the code examples use PHP but the logic is same using any other web scripting language. The book covers everything from installation to configuration to get you started quickly. It has numerous code examples that you can try on your own and learn while doing so. It has two fully fledged example applications for you to follow. You will learn how to set up Sphinx on your own server, with the basics of how search engines work explained in brief. You will learn how to create an index using Sphinx then perform a search on that index using the client API and filter your results using different attributes. You will learn how to configure Sphinx to get the most from it. You will also learn how Sphinx gives quality search results by relevance ranking and how to create both simple and complex search forms.