PHP oops Hybrid Inheritance Example

class GrandFather
{
	public function pocketMoney()
	{
		return  'Take this 1000 $';
	}

}


class Father extends GrandFather
{
	public function myIncome()
	{
		echo "My father told ".parent::pocketMoney();
	}
	
	public function myExpense()
	{
		return 'Take this 500 $
';
	}
}

class Elder extends Father
{
		
	public function myEarning()
	{
		echo "Father told me ".parent::myExpense();

	}

}

class Younger extends Father
{
	public function myEarning()
	{
		echo "Father told me ".parent::myExpense();

	}

	
}


$elder = new Elder();

$elder->myEarning();  // output Father told me Take this 500 $

$younger = new Younger();

$younger->myEarning();  // output Father told me Take this 500 $