The SplObserver interface

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Php/docs/latest/class.splobserver


The SplObserver interface

Introduction

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

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

Interface synopsis

class SplObserver {

/* Methods */

public update(SplSubject $subject): void

}

Table of Contents


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https://www.php.net/manual/en/class.splobserver.php