require_once 'HTML/Progress.php';
This method is used to know what are the listeners object attached on a progress meter.
HTML_Progress::addListener, HTML_Progress::removeListener
<?php require_once 'HTML/Progress/monitor.php'; $bar = new HTML_Progress(); $mon = new HTML_Progress_Monitor(); $bar->addListener($mon); $li = $bar->getListeners(); printf("%d listener(s) <br/>", count($li)); ?>