I was just about to post my poor attempt at the logic, yours look much neater! thank you :)

PHP Code:
$restult1 SELECT count(*) as count FROM `orders_productsWHERE `orders_id` = 14532;

if 
$result1 {  

$result2 SELECT `products_quantityFROM `orders_productsWHERE `orders_id` = 14532;

if 
$result2 

$oneItemOrder true;

}