mysql sum with php and pdo

[Sub_Seven]

Could anyone be so kind and tell me how to sum numbers using mysql, php and pdo, I cannot seem to find anything online that will help me.

This is my mysql connection:

<?php $data = $conn->query("SELECT SUM(purchaseAmount) FROM orders WHERE status = 3 AND YEAR(datePaid) = YEAR(CURDATE()) AND MONTH(datePaid) = MONTH(CURDATE())"); ?>

But that's as far as I've gotten.

Thanks.

[Sub_Seven]

Oops, I got it, it's the same as regular old PDOless connections, I was drowning in a glass of water :-|

My bad...