name . ", " . $this->age . " years old";    
    }
abstract public function Greet();
}
class cat extends Animal
{
public function Greet()
{
return "Lion!";    
}
public function Describe()
{
return parent::Describe() . ", and I'm a cat!";    
}
}
$animal = new cat();
$animal->name = "Seru";
$animal->age = 5;
echo $animal->Describe();
echo $animal->Greet();

?>