public static function main(array $args = array())
{
$mallard = new MallardDuck();
$mallard->performQuack();
$mallard->performFly();
$model = new ModelDuck();
$model->performFly();
$model->setFlyBehavior(new FlyRocketPowered());
$model->performFly();
}
}
}
class MallardDuck extends Duck
{
function __construct()
{
$this->quackBehavior = new QuackLoud();
$this->flyBehavior = new FlyWithWings();
}
public function display()
{
print "I'm a real Mallard duck\n";
}
}
class ModelDuck extends Duck
{
function __construct()
{
$this->flyBehavior = new FlyNoWay();
$this->quackBehavior = new QuackLoud();
}
public function display()
{
print "I'm a model duck";
}
}
$mallard = new MallardDuck();
$mallard->performQuack();
$mallard->performFly();
$mallard->setFlyBehavior(new FlyRocketPowered());
$mallard->performFly();