Php > Php Classes

An updated OOP - Inheritance

An updated OOP - Inheritance

<?php 
        /*PHP supports inheritance. Inheritance is the concept of one class being 
        devined as a special case of a more general class. 
        A Sport car is a car it inherits all its variables and functions from Car*/ 
         
class Car {           
       var $description;  //The aim here is to display the description and the cost of car! 
       var $cost;           

       function Car($d, $c) { 
            $this->set($d, $c); 
            } 

            function display() { 
            echo ("<br>$this->description, $this->cost"); 
            } 

            function set($d,$c) { 
                $this->description = $d; 
                $this->cost = $c; 
            } 

            function setDescription($d) { 
                $this->description = $d; 
            } 

            function getDescription() { 
                return $this->description; 
            } 
        } 

     class sportcar extends Car { 
        var $tyres; 

        function sportcar($d, $c, $t) { 
            $this->set($d, $c); 
            $this->tyres = $t; 
            } 

        function displays() {  //This is a function to display items named ie tyres 
            echo "<br>$this->tyres"; // Here is to display the number of tyres 
            $this->display();             
            } 
        } 
     
        $ordinary = new Car("Ford", 29050.00); // Constructor - new car 
        $scar = new sportcar("Porshe",900000.00,4); // Constructor - new sportcar 

        $ordinary->display(); 
        $scar->displays(); //scar : Sportcar 
        ?>