I am in the process of making a modification to the order process and I ran across the following line of code:
foreach ($products AS $product)
$success &= $cart->updateQty($product['quantity'], (int)$product['id_product'], (int)$product['id_product_attribute'], NULL, 'up');
I've never see the use of &= in php and I'm having trouble finding out what it means. Does this mean assign by reference?