Hi, I'm having real trouble making sense of strings passed back from a credit card processor to my site via <input> tags. If the customer buys more than one product, I get the following in the passback: [code] <input type="hidden" name="product_id" value="2" /> <input type="hidden" name="product_id1" value="1" /> <input type="hidden" name="quantity" value="5" /> <input type="hidden" name="quantity1" value="3" /> [/code] and so on. I need to match 'quantity1' to 'product_id1' etc. and then input them into the MySQL database into a table called 'orders'. Each product order gets its own row, but is linked by the client_id. I have set up the following 'foreach' loop [code] foreach($_POST as $key => $value) { $title = preg_replace('/[^a-z,A-Z]/','',$key); $str = "$title[0]$title[1]$title[2]$title[3]$title[4]$title[5]$title[6]$title[7]$title[8]"; $str2 = "$title[0]$title[1]$title[2]$title[3]$title[4]$title[5]$title[6]$title[7]"; if ($str == 'productid') { $product_id = $value; $num = preg_replace('/[^0-9]/','',$key); } elseif ($str2 == 'quantity') { $quantity = $value; $query4 = "INSERT into orders (client_id, product_id, order_number, quantity, date) VALUES ('$client_id', '$product_id', '$order_number', '$quantity', NOW())"; $result4 = @mysql_query ($query4); if ($result4) { $query5 = "UPDATE products SET quantity_sold = quantity_sold + '$quantity' WHERE product_id = $product_id"; $result5 = @mysql_query ($query5); } } } mysql_close(); } [/code] This works fine when the <input> tags come in the following order: [code] <input type="hidden" name="product_id" value="2" /> <input type="hidden" name="quantity" value="5" /> <input type="hidden" name="product_id1" value="1" /> <input type="hidden" name="quantity1" value="3" /> [/code] But I don't have control over the order the 3rd party shopping cart sends them in! Although the quantity seems to work, the problem is that it seems to input the same product_id into all the rows, depending on which product_id is processed first. This also means the quantity in the products row is wrong. Does anyone have an idea how I can keep the loop but match the relevant 'product_id's with 'quantity's? I'm sure the currently unused $num variable could help. I'd be really grateful for any help. All the best, Rob