The SplSubject interface

    (PHP 5 >= 5.1.0, PHP 7, PHP 8)

    Introduction

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

    Interface synopsis

    interfaceSplSubject {
    publicattach(SplObserver$observer): void
    publicdetach(SplObserver$observer): void
    publicnotify(): void
    }

    Table of Contents

    To Top