class GrandChildClass extends ChildClass{
public function __construct(){
//explicitly call the parent constructor to ensure it is run
parent::__construct();
}
public function runAncestorClassDoSomething02(){
//access the top level class function by using the class name
ParentClass::doSomething02();
}
}
$child = new ChildClass();
$child->doSomething01(); //access all public and protected members of the parent class
$child->doSomething02(); //override parent class members
$child->runParentClassDoSomething02();
</code></pre>
</ol>
<span>
<?php
echo "<h3>Instantiate a Penguin that inherits from Bird...</h3>";
require_once "Penguin.php";
$emperor = new Penguin("Black", "Squak");
echo "<h3>Run a function unique to Penguins...</h3>";
$emperor->swim();
echo "<h3>Run a Penguin function the overrides the parent...</h3>";
$emperor->fly();
?>
</span>
</body>
</html>
