SplObserver (interface)

The SplObserver interface

Introduction

(PHP 5 >= 5.1.0, PHP 7)

The SplObserver interface is used alongside SplSubject to implement the Observer Design Pattern.

Interface synopsis

SplObserver {
/* Methods */
abstract public void update ( SplSubject $subject )
}

Table of Contents

© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/class.splobserver.php

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