AjaxSearch Category->Name->Product Reference

[poland88]

Hello everybody!

I'd like to ask how to change ajax searching. Now it looks like this: Category Name -> Product Name
I'd like to add to this Product Reference.
I found the code:

foreach ($search as $product)
echo $product['id_product'].'|'.$product['pname'].'|'.$product['cname'].'|'.$link->getProductLink($product['id_product'], $product['prewrite'], $product['crewrite'])."\n";
die; 

but I don't know what is the variable name for product reference (e.g. $product['pref']).

Thank you for Your help!