PHP Manual
各种类及接口
The SplObserver interface

The SplObserver interface

(PHP 5 >= 5.1.0, PHP 7)

简介

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

接口摘要

SplObserver {

/* 方法 */

abstract public update ( SplSubject $subject ) : void

}

Table of Contents

SplObserver::update — Receive update from subject

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