Object Oriented Programming in PHP: The Way to Large PHP Projects

This arcticle introduces Object Oriented Programming (OOP) in PHP. I will show
you how to code less and better by using
some OOP concepts and PHP tricks. Good luck!

Concepts of object oriented programming:
There’re differences between authors, I can mention that a OOP language must have:

• Abstract data types and information hidding
• Inheritance
• Polymorphism

The encapsulation is done in php using classes:

<?php
class Something {
    // In OOP classes are usually named starting with a cap letter.
    var $x;
    function setX($v) {
        // Methods start in lowercase then use lowercase to seprate
        // words in the method name example getValueOfArea()
        $this->x=$v;
    }
    function getX() {
        return $this->x;
    }
}
?>

Of course you can use your own nomenclature, but having a standarized one is useful.