getComposer()->getConfig()->get('vendor-dir'); PackageClass::postUpdate($vendorDir); print("---postUpdate finished---"); } public static function postAutoloadDump(Event $event) { $vendorDir = $event->getComposer()->getConfig()->get('vendor-dir'); require $vendorDir . '/autoload.php'; some_function_from_an_autoloaded_file(); } public static function postPackageInstall(PackageEvent $event) { } public static function postPackageUpdate(PackageEvent $event) { } }