In this humble author’s (or not-so-humble author’s) opinion, “advanced PHP” is about continuing to
learn: you already know how to use PHP, and presumably MySQL, for all the standard stuff, and now
it’s time to expand that knowledge. This new knowledge can range from how to do different things,
how to improve on the basic things, and how other technologies intersect with PHP. In short, you
know how to make a dynamic Web site with PHP, but you’d like to know how to make a better Web
site, with every possible meaning of “better.”
This is the approach I’ve taken in writing this book. I haven’t set out to blow your mind discussing
esoteric idiosyncrasies the language has; rewriting the PHP, MySQL, or Apache source code; or
making theoretically interesting but practically useless code. In short, I present to you several hundred
pages of beyond-the-norm but still absolutely necessary (and often cool) tips and techniques.