I resisted learning PHP for a long time. I stuck solidly to HTML and CSS when building my own webpages, though I did use third-party PHP-based software on my site. One of the scripts was very buggy and not very secure, so I was convinced that not only was PHP hard to learn, it was fully of security holes. I've since revised my opinion.
Before I bought this book, I bought a couple of other books, but they were not as easy to follow as this one. This book is geared towards people who have little or no experience of programming. (You should be familiar with HTML and CSS. I would not attempt to use this book if you don't have a handle on those.) The scripts are very practical and useful, and I can see myself using them on my site in the future. I highly recommend it.
The reason I gave this book four stars, and not five, is that the section at the end about regular expressions isn't really that useful. He does not cover PCRE; POSIX is deprecated as of PHP 5.3.0. (Current version is 5.3.3) I was really disappointed with that, as it's hard to find good tutorials online.