comments-bundle/src/Resources/contao/dca/tl_comments.php
public function notifyOfReply(Contao\DataContainer $dc)
	{
		// Return if there is no active record (override all) or no reply or the notification has been sent already
		if (!$dc->activeRecord || !$dc->activeRecord->addReply || $dc->activeRecord->notifyReply)
		{
			return;
		}

		$objNotify = Contao\CommentsNotifyModel::findActiveBySourceAndParent($dc->activeRecord->source, $dc->activeRecord->parent);

		if ($objNotify !== null)
		{
			while ($objNotify->next())
			{
				// Prepare the URL
				$strUrl = Contao\Idna::decode(Contao\Environment::get('base')) . $objNotify->url;

				$objEmail = new Contao\Email();
				$objEmail->from = $GLOBALS['TL_ADMIN_EMAIL'];
				$objEmail->fromName = $GLOBALS['TL_ADMIN_NAME'];
				$objEmail->subject = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifyReplySubject'], Contao\Idna::decode(Contao\Environment::get('host')));
				$objEmail->text = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifyReplyMessage'], $objNotify->name, $strUrl . '#c' . $dc->id, $strUrl . '?token=' . $objNotify->tokenRemove);
				$objEmail->sendTo($objNotify->email);
			}
		}

		$this->Database->prepare("UPDATE tl_comments SET notifiedReply='1' WHERE id=?")->execute($dc->id);
	}
public function notifyOfReply(Contao\DataContainer $dc)
	{
		// Return if there is no active record (override all) or no reply or the notification has been sent already
		if (!$dc->activeRecord || !$dc->activeRecord->addReply || $dc->activeRecord->notifyReply)
		{
			return;
		}

		$objNotify = Contao\CommentsNotifyModel::findActiveBySourceAndParent($dc->activeRecord->source, $dc->activeRecord->parent);

		if ($objNotify !== null)
		{
			while ($objNotify->next())
			{
				// Prepare the URL
				$strUrl = Contao\Idna::decode(Contao\Environment::get('base')) . $objNotify->url;

				$objEmail = new Contao\Email();
				$objEmail->from = $GLOBALS['TL_ADMIN_EMAIL'];
				$objEmail->fromName = $GLOBALS['TL_ADMIN_NAME'];
				$objEmail->subject = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifyReplySubject'], Contao\Idna::decode(Contao\Environment::get('host')));
				$objEmail->text = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifyReplyMessage'], $objNotify->name, $strUrl . '#c' . $dc->id, $strUrl . '?token=' . $objNotify->tokenRemove);
				$objEmail->sendTo($objNotify->email);
			}
		}

		$this->Database->prepare("UPDATE tl_comments SET notifiedReply='1' WHERE id=?")->execute($dc->id);
	}
Notify subscribers of a reply

@param Contao\DataContainer $dc