}
public function fire()
{
//perform login
$this->notify();
}
}
class LogHandler implements Observer
{
public function handle()
{
var_dump('log something important');
}
}
class EmailNotifier implements Observer
{
public function handle()
{
var_dump('fire off an email');
}
}
class LoginReporter implements Observer
{
public function handle()
{
var_dump('do some form of reporting');
}
}
$login = new Login();
$login->attach([new LogHandler(), new EmailNotifier(), new LoginReporter()]);
$login->fire();
/**
* 登陆后发邮件
*/
class LoginAndEmail implements Observer
{
/**
* 观察者动作
*/
public function handle()
{
var_dump("login and emailing...");
}
}
/**
* 登陆后推送信息
*/
class LoginAndNotify implements Observer
{
/**
* 观察者动作
*/
public function handle()
{
var_dump("login and notifying...");
}
}
$login = new Login();
$email = new LoginAndEmail();
$notify = new LoginAndNotify();
$login->attach([$email, $notify]);
$login->doLogin();
function __construct(Login $login)
{
$this->login = $login;
$login->attach($this);
}
*/
class LogHandler implements Observer
{
public function handle()
{
var_dump("Log something");
}
}
/**
* Class EmailHandler
*/
class EmailHandler implements Observer
{
public function handle()
{
var_dump('Send an email');
}
}
/**
* Class EmailHandler
*/
class Reporter implements Observer
{
public function handle()
{
var_dump('Reporting');
}
}
$login = new Login();
$login->attach([new LogHandler(), new EmailHandler()])->attach(new Reporter());
$login->fire();
return $o != $observer;
});
}
public function notify()
{
return array_walk($this->observers, function ($observer) {
$observer->handle();
});
}
}
class SendWelcomeEmail implements Observer
{
public function handle()
{
var_dump('send a welcome email.');
}
}
class UpdateAccumulateScore implements Observer
{
public function handle()
{
var_dump('update the accumulate score.');
}
}
$login = new Login();
$sendWelcomeEmail = new SendWelcomeEmail();
$login->attach($sendWelcomeEmail);
$login->attach(new UpdateAccumulateScore());
$login->notify();
$login->detach($sendWelcomeEmail);
$login->notify();
unset($this->observers[$index]);
}
public function notify()
{
foreach ($this->observers as $observer) {
$observer->handle();
}
}
public function fire()
{
$this->notify();
}
}
class LogHandler implements Observer
{
public function handle()
{
var_dump('log something important.');
}
}
class EmailHandler implements Observer
{
public function handle()
{
var_dump('email something.');
}
}
$login = new Login();
$login->attach(new LogHandler());
$login->attach(new EmailHandler());
$login->fire();
foreach ($this->observers as $observer) {
$observer->handle();
}
}
private function attachObservers($observers)
{
foreach ($observers as $observer) {
if (!$observer instanceof Observer) {
throw new Exception();
}
$this->attach($observer);
}
}
}
class Log implements Observer
{
public function handle()
{
echo 'log something about login event' . '<br>';
}
}
class Email implements Observer
{
public function handle()
{
echo 'fire off an email' . '<br>';
}
}
$login = new Login();
$login->attach([new Log(), new Email()]);
$login->notify();
