What Is New in PHP 5? discusses the new features in PHP 5. Most of these new features deal with new object-oriented features, including small examples for each feature. It also gives an overview of the new extensions in PHP 5. Most of the topics mentioned in this chapter are explained in more detail in later chapters.
PHP 5 Basic Language, introduces the PHP syntax to those readers not familiar with PHP. All basic language constructs and variable types are explained along with simple examples to give the reader the necessary building blocks to build real scripts.