The SplSubject interface

(PHP 5 >= 5.1.0, PHP 7)

简介

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

接口摘要

SplSubject {
/* 方法 */
abstract public attach ( SplObserver $observer ) : void
abstract public detach ( SplObserver $observer ) : void
abstract public notify ( void ) : void
}

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