code.php

/*
	 * Get all carriers available for this zon
	 */
	public static function getCarriersByCountry($id_country, $id_state, $zipcode, $exiting_cart, $id_customer)
	{
		// Create temporary Address
		$addr_temp = new Address();
		$addr_temp->id_customer = $id_customer;
		$addr_temp->id_country = $id_country;
		$addr_temp->id_state = $id_state;
		$addr_temp->postcode = $zipcode;

		// Populate required attributes
		// Note: Some carrier needs the whole address
		// the '.' will do the job
		$addr_temp->firstname = ".";
		$addr_temp->lastname = ".";
		$addr_temp->address1 = ".";
		$addr_temp->city = ".";
		$addr_temp->alias = "TEMPORARY_ADDRESS_TO_DELETE";
		$addr_temp->save();

        $id_prev_address = $exiting_cart->id_address_delivery;
        $exiting_cart->id_address_delivery = $addr_temp->id;
		$carriers = $exiting_cart->simulateCarriersOutput(null, true);

        $exiting_cart->id_address_delivery = $id_prev_address;
		//delete temporary objects
		$addr_temp->delete();

		return $carriers;
	}