Best syntax ever

bestSyntaxEver.php

	public function processGenerateDeliverySlipPDF()
	{
		if (Tools::isSubmit('id_order'))
			$this->generateDeliverySlipPDFByIdOrder((int)Tools::getValue('id_order'));
		elseif (Tools::isSubmit('id_order_invoice'))
			$this->generateDeliverySlipPDFByIdOrderInvoice((int)Tools::getValue('id_order_invoice'));
		elseif (Tools::isSubmit('id_delivery'))
		{
			$order = Order::getByDelivery((int)Tools::getValue('id_delivery'));
			$this->generateDeliverySlipPDFByIdOrder((int)$order->id);
		}
		else
			die (Tools::displayError('The order ID -- or the invoice order ID -- is missing.'));
	}