Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Missing important points

As a PHP newbie, but professional C++/Java/EJB programmer, I was really disappointed by this book mainly because it complitely ommits the Object Oriented (OO) aspects of PHP as well as common code reusability principles which are very important when building dynamic web sites. If you look for a reference for accessing particular aspects of PHP such as sessions, database access and so on, this book is for you, but if you want to go beyond and planning to use PHP professionally, you should buy another book.