PHP Tutorials - Herong's Tutorial Examples - v5.17, by Herong Yang
What Is a Class
This section describes what is a class - a user defined datatype which is associated with a predefined set of properties and operations (also called methods).
What Is a Class? A class is a user defined datatype which is associated with a predefined set of properties and operations (also called methods).
In PHP, a class is declared with the "class" statement block:
class class_name { public $var_name; ... function __construct() { ... } public function method_name() { ... } ... }
Notice that:
Here is a simple PHP class that has no properties and only one public operation:
<?php class HelloClass { public function show() { echo "Hello world!\n"; } } ?>
Table of Contents
Introduction and Installation of PHP
PHP Data Types and Data Literals
Variables, References, and Constants
Expressions, Operations and Type Conversions
Conditional Statements - "if" and "switch"
Loop Statements - "while", "for", and "do ... while"
Function Declaration, Arguments, and Return Values
Interface with Operating System
►Introduction of Class and Object
What Is a Superclass and a Subclass
What Is an Overloaded Property
What Is Object Property Iteration
Updating Variables Who Share an Object
Passing Objects as Function Arguments
Integrating PHP with Apache Web Server
Retrieving Information from HTTP Requests
Creating and Managing Sessions in PHP Scripts
Sending and Receiving Cookies in PHP Scripts
Controlling HTTP Response Header Lines in PHP Scripts
MySQL Server Connection and Access Functions
Functions to Manage Directories, Files and Images
SOAP Extension Function and Calling Web Services
SOAP Server Functions and Examples
Localization Overview of Web Applications
Using Non-ASCII Characters in HTML Documents
Using Non-ASCII Characters as PHP Script String Literals
Receiving Non-ASCII Characters from Input Forms
"mbstring" Extension and Non-ASCII Encoding Management
Managing Non-ASCII Character Strings with MySQL Servers
Parsing and Managing HTML Documents
Configuring and Sending Out Emails
Managing PHP Engine and Modules on macOS