public function __construct()
{
$sub = new ConcreteSubject();
$ob1 = new ConcreteObserverPhone();
$ob2 = new ConcreteObserverTablet();
$ob3 = new ConcreteObserverDT();
$sub->attachObser($ob1);
$sub->attachObser($ob2);
$sub->attachObser($ob3);
$sub->setState("decoCar");
}
public function update(SplSubject $subject)
{
echo 'ConcreteObserver2 state is ', $subject->getState(), '<br>';
}
}
/**
* 具体观察者 3
*
*/
class ConcreteObserver3 extends bserver implements SplObserver
{
function __construct($state)
{
parent::__construct($state);
}
public function update(SplSubject $subject)
{
echo 'ConcreteObserver3 state is ', $subject->getState(), '<br>';
}
}
$subject = new ConcreteSubject();
$observer1 = new ConcreteObserver1(1);
$observer2 = new ConcreteObserver2(2);
$observer3 = new ConcreteObserver3(3);
$subject->attach($observer1);
$subject->attach($observer2);
$subject->attach($observer3);
echo 'Subject state is 1', '<br>';
$subject->setState(1);
echo 'Subject state is 2', '<br>';
$subject->setState(3);
