Hour 4. The Building Blocks
What You’ll Learn in This Hour:
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
In this hour, you will get your hands dirty with some of the nuts and bolts of the language.
There’s a lot of ground to cover, and if you are new to programming, you might feel bombarded with information. Don’t worry—you can always refer to this chapter later. Concentrate on understanding rather than memorizing the features covered.
If you’re already an experienced programmer, you should at least skim this hour’s lesson. It covers a few PHP-specific ...
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