In this hour, you will get your hands dirty with some of the nuts and bolts of the PHP scripting language. Those of you new to programming may feel overwhelmed at times, but don't worry?you can always refer back to this hour later on. Concentrate on understanding the concepts rather than memorizing the features covered.
If you're already an experienced programmer, you should at least skim this hour's lesson, as it covers a few PHP-specific features.
In this hour, you will learn
About variables?what they are, why you need to use them, and how to use them
How to define and access variables
About data types
About some of the more commonly used operators
How to use operators to create expressions
How to define and use constants