SplObserver::update

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

SplObserver::update — Receive update from subject

public function SplObserver::update(SplSubject $subject): void

This method is called when any SplSubject to which the observer is attached calls SplSubject::notify().

Warning

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

No value is returned.