Language::get PHP Method

    public function get($key)
    {
        return isset($this->data[$key]) ? $this->data[$key] : $key;
    }

	public function confirm($order_id) {
		$this->load->model('checkout/order');

		$order_info = $this->model_checkout_order->getOrder($order_id);

		if ($order_info) {
			$this->load->model('localisation/language');

			$language = new Language($order_info['language_directory']);
			$language->load($order_info['language_filename']);
			$language->load('mail/voucher');

			$voucher_query = $this->db->query("SELECT *, vtd.name AS theme FROM `" . DB_PREFIX . "voucher` v LEFT JOIN " . DB_PREFIX . "voucher_theme vt ON (v.voucher_theme_id = vt.voucher_theme_id) LEFT JOIN " . DB_PREFIX . "voucher_theme_description vtd ON (vt.voucher_theme_id = vtd.voucher_theme_id) AND vtd.language_id = '" . (int)$order_info['language_id'] . "' WHERE v.order_id = '" . (int)$order_id . "'");

			foreach ($voucher_query->rows as $voucher) {
				// HTML Mail
				$template = new Template();

				$template->data['title'] = sprintf($language->get('text_subject'), $voucher['from_name']);

				$template->data['text_greeting'] = sprintf($language->get('text_greeting'), $this->currency->format($voucher['amount'], $order_info['currency_code'], $order_info['currency_value']));
				$template->data['text_from'] = sprintf($language->get('text_from'), $voucher['from_name']);
				$template->data['text_message'] = $language->get('text_message');
				$template->data['text_redeem'] = sprintf($language->get('text_redeem'), $voucher['code']);
				$template->data['text_footer'] = $language->get('text_footer');

				if (file_exists(DIR_IMAGE . $voucher['image'])) {
					$template->data['image'] = $this->config->get('config_url') . 'image/' . $voucher['image'];
				} else {
					$template->data['image'] = '';
				}

				$template->data['store_name'] = $order_info['store_name'];
				$template->data['store_url'] = $order_info['store_url'];
				$template->data['message'] = nl2br($voucher['message']);

				if (file_exists(DIR_TEMPLATE . $this->config->get('config_template') . '/template/mail/voucher.tpl')) {
					$html = $template->fetch($this->config->get('config_template') . '/template/mail/voucher.tpl');
				} else {
					$html = $template->fetch('default/template/mail/voucher.tpl');
				}

				$mail = new Mail();
				$mail->protocol = $this->config->get('config_mail_protocol');
				$mail->parameter = $this->config->get('config_mail_parameter');
				$mail->hostname = $this->config->get('config_smtp_host');
				$mail->username = $this->config->get('config_smtp_username');
				$mail->password = $this->config->get('config_smtp_password');
				$mail->port = $this->config->get('config_smtp_port');
				$mail->timeout = $this->config->get('config_smtp_timeout');
				$mail->setTo($voucher['to_email']);
				$mail->setFrom($this->config->get('config_email'));
				$mail->setSender($order_info['store_name']);
				$mail->setSubject(html_entity_decode(sprintf($language->get('text_subject'), $voucher['from_name']), ENT_QUOTES, 'UTF-8'));
				$mail->setHtml($html);
				$mail->send();
			}
		}
	}