Notify an observer

# SplSubject::notify

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

SplSubject::notify — Notify an observer

### Description

public SplSubject::notify(): void

Notifies all attached observers.

Warning

This function is currently not documented; only its argument list is available.

### Parameters

This function has no parameters.

### Return Values

No value is returned.

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