Objects and classes lie at the heart of this book, and since the introduction of PHP 5, they lie at the heart of PHP too. In this chapter, I lay down the groundwork for more in-depth work with objects and design by examining PHP's core object-oriented features.
PHP 5 brought with it a radical advance in object-oriented support, so if you are already familiar with PHP 4, you will probably find something new here. If you are new to object-oriented programming, you should read this chapter carefully.
This chapter will cover