Question

For a backend module I have the need to check if a product id is valid, that is: is there a product with that id? I’ve found two solutions for that, but I’m not very happy with either one:

1. Directy query the catalog_product_entity table. Very fast but definitely not very elegant and I fear there might be issues I’m not aware of.

2. Use the following code:

   $product = Mage::getModel('catalog/product')->load($productID)
   if ($product->getId()) {
     //valid id
   }
   else {
     //not a valid id
   }
   

   This should work but it’s painfully slow, because I have to check several IDs at once. And since I don’t need the actual product data, it doesn’t really make sense to load it.

Any better suggestions?

Answer 1

Thanks benmarks and james, you’ve pointed me in the right direction and I just combined your approches:

$productIds = array(16,17,18,19,290993,25    /*...*/);

$collection = Mage::getResourceModel('catalog/product_collection');
$collection->addFieldToFilter('entity_id',array('in'=>$productIds));

$foundIds = $collection->getAllIds();

var_dump($foundIds); /* each array value should be a valid ID */

For some reason, getAllIds() returns Ids as strings rather than ints, but that’s fine.