Creating a compund url
Trying to create a compound URL that will yield a search result of 2 or more categories.
EG I have the working URL https://www.thestonecenter.com/products_results.php?Category_ID=34&Search=1
But if want to hardcode an URL that shows Category_ID=34 + Category_ID=35, what should that URL look like?
I know I must be missing something simple or basic, but I'm stuck. Would appreciate your help. Thank you