If you're like me, you're picking up this book at your local bookstore or reading this introduction online, trying to get a "feel" for the book. You're either a PHP engineer curious to dive headfirst into the nuances of building a large application, or someone who has just been tasked to support a high-traffic PHP application. This book is for you, the PHP developer who has a good understanding of PHP and is not a newcomer to the language—the PHP developer who wants to understand the "whys" and the tool sets to trace and "look under the hood" of your PHP script.

The goal of the book is to give you the complete picture of all the components that need to be identified when optimizing your PHP application. From the JavaScript to the ...

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