PHP classes and objects. Free online PHP and MySQL Web Database Programming Tutorial...

You may have heard that PHP is an object oriented programming language. PHP fully supports the concepts of classes, objects and inheretence. This makes PHP a really very powerful programming language.

Classes and objects in PHP are very similar to Java. A variable of the desired type is created using the new operator. Just like Java, PHP supports single inheritance only and uses the keyword extends to inherit from a super class. The inherited methods and members can be overridden, unless the parent class has declared a method as final.

A simple PHP class is defined as under:

<?php
class Student {
var $name; // name of the student
var $class; // class of the student
var $GPA; // GPA of the student
function printName() {
echo $this->name;
}
function printClass() {
echo $this->class;
}
function printGPA() {
echo $this->GPA;
}
}
}
?>

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