Introduction to the Second Edition
In the three years since the release of PHP 5 (and, incidentally, of the first edition of this book), developers in the PHP community have driven objects and patterns ever further into the mainstream. The PHP language has itself matured, accommodating a steady stream of enhancements. At the same time, tools for testing and integration have continued to improve.
During this period, I've been delighted to hear from readers who found the book useful in their projects. I've even been told of a few "aha!" moments in which the whole seeming mess of objects, patterns, classes, and components clicked into focus, became elegant. This is a particular pleasure, since it's for moments like these that I started to write ...
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