Variable Scope

Transcript

1. Functions, Arguments, and Returns Variable Scope
2. Global Scope
3. Global Scope The Global Scope is the main context of an Application. Variables in the Global Scope of a PHP application are accessible anywhere after the variable has been declared.
4. Global Scope
5. Application Input Output
6. Functions
7. Functions Functions are blocks of code which can be used more than once within an application.
8. Functions
9. Functions Functions create a relationship between Input and Output. In PHP, a function’s input is called the Argument list and the output is called the Return statement.
10. Function $args $return
11. Functions
12. Application Input Output Function $args $return
13. Functions
14. Object Oriented Programming
15. Classes
16. Classes
17. Class $args $return Method $args
18. Application Input Output Class $args $return Method $args Class $args $return Method $args Class $args $return Method $args Class $args $return Method $args