PHP Basics

Transcript

1. PHP Basics
2. PHP Intro What is PHP? • PHP stands for PHP: Hypertext Preprocessor • PHP is a widely-used, open source scripting language • PHP scripts are executed on the server • PHP is free to download and use
3. PHP SYNTAX • Simple example • PHP Comments
4. PHP Variables • Give example of int, string, float • PHP is a loosely typed language ◦ In the example above, notice that we did not have to tell PHP which data type the variable is. ◦ PHP automatically converts the variables into correct data type ◦ In a strongly typed programming language, we will have to declare (define) the type and name of the variable before using it.
5. PHP Variable Scope • Local • Global • Static • Parameter
6. PHP Loops • If...Else • Switch • While • For • Foreach
7. PHP Array • Definition of array is totally changed in PHP which we have learned in C/C++, but the concept is still same. • An variable which can hold multiple values. • Types of array:- ◦ Indexed ◦ Associative ◦ Multi-dimensional
8. PHP functions
9. PHP $_GET & $_POST
10. PHP Include • include • include_once • require • require_once