لطفا منتظر باشید ...
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 out of loops
- How to nest one loop within another
- How to use PHP start and end tags within control structures
