Скидка в способе оплаты - [VM1] Управление товарами, атрибутами, типами, ценами

$value = (float) ($discount/100) * $subtotal;

$shipping_total = $db->f('shipping_total');
$zzz = $shipping_total + $subtotal;
$value = (float) ($discount/100) * $zzz;

$shipping_total = $db->f('shipping_total');

global $vars;
$ship_arr = explode("|", $vars["shipping_rate_id"]);
echo "<pre>".print_r($ship_arr, true)."</pre>";

Array
(
    [0] => 
)

global $vars;
$ship_arr = explode("|", $var["shipping_rate_id"]);
$ship_arr = $ship_arr[0];
echo  $ship_arr;

$value = (float) ($discount/100) * $subtotal;

global $vars;
$ship_arr = explode("|", $vars["shipping_rate_id"]);
$shippingtotal = $ship_arr[3]; // [3] элемент массива - стоимость доставки
			
$doplata = $shippingtotal + $subtotal;
$value = (float) ($discount/100) * $doplata;

return $value;

global $vars;
return $vars["shipping_rate_id"];

$shipping_rate_id = explode("|",urldecode($GLOBALS['vars']['shipping_rate_id'])); 
$shippingtotal = $shipping_rate_id[count($shipping_rate_id)-2]; 
$newsubtotal = $subtotal + $shippingtotal; 
$value = (float) ($discount/100) * $newsubtotal; 

$discount  = $ps_checkout->get_payment_discount( $db->f("payment_method_id") );

$shipping_rate_id = explode("|",urldecode($GLOBALS['vars']['shipping_rate_id'])); 
$shippingtotal = $shipping_rate_id[count($shipping_rate_id)-2]; 
$payment_SkidkaDoplata = $GLOBALS['CURRENCY_DISPLAY']->getFullValue( $db->f("payment_method_discount") );
$label_SkidkaDoplata = ($shippingtotal / 100) * $payment_SkidkaDoplata - $discount; 

echo " (+ ".$CURRENCY_DISPLAY->getFullValue(abs($label_SkidkaDoplata)).") \n";