Overriding properties and Methods

 <?php

class Base
{
    public $name = "Parent Class";
    public function calculation($a, $b)
    {
        return $a * $b;    
    }
}
class Derived
{
    public $name = "Child Class";
    public function calculation($a, $b)
    {
        return $a + $b;
    }
}
$test = new Base();
$test2 = new Derived();
echo $test->name . "<br>";
echo $test2->name . "<br>";
echo $test->calculation(5, 10) . "<br>";
echo $test2->calculation(40, 30);

//  OUTPUT:
// Parent Class
// Child Class
// 50
// 70
?>

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