Get productID from specific order in Magento
$order
= Mage::getModel(
'sales/order'
)->load(
$order_id
);
$items
=
$order
->getAllItems();
$itemcount
=
count
(
$items
);
$name
=
array
();
$unitPrice
=
array
();
$sku
=
array
();
$ids
=
array
();
$qty
=
array
();
foreach
(
$items
as
$itemId
=>
$item
)
{
$name
[] =
$item
->getName();
$unitPrice
[]=
$item
->getPrice();
$sku
[]=
$item
->getSku();
$ids
[]=
$item
->getProductId();
$qty
[]=
$item
->getQtyToInvoice();
}