1. Go to this page and download the library: Download flamecore/event-observer library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
flamecore / event-observer example snippets
$responder = new Responder();
$responder->setListener('action.event', function (array $data, $event) {
print_r($data);
});
$observer = new Observer();
$observer->addResponder('action', $responder);