The SplSubject interface
Introduction
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
The SplSubject interface is used alongside SplObserver to implement the Observer Design Pattern.
Interface synopsis
interface SplSubject {
/* Methods */
public attach(SplObserver $observer): void
public detach(SplObserver $observer): void
public notify(): void}
Table of Contents
- SplSubject::attach — Attach an SplObserver
- SplSubject::detach — Detach an observer
- SplSubject::notify — Notify an observer
© 1997–2021 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/class.splsubject.php
