Chapter 5. Flow Control Functions in PHP
The scripts created in the last chapter flow only in a single direction. The same statements are executed in the same order every time a script is run. This does not allow for much flexibility.
You will now look at some structures that enable your scripts to adapt to circumstances. In this chapter, you will learn
How to use the if statement to execute code if a test expression evaluates to true
How to execute alternative blocks of code when the test expression of an if statement evaluates to false
How to use the switch statement to execute code based on the value returned by a test expression
How to repeat execution of code using a while statement
How to use for statements to make neater loops
How to break ...
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