title: Paypal IPN payment_status says completed but payment was declined
body: <p>I am using Paypal Rest API PHP and IPN. I am testing paypal live with a buyer and seller account. I have tried a buyer with not enough balance. After executing the payment, the payment did not push through since it has not enough balance but <strong>$_POST['payment_status']</strong> returned '<em>Completed</em>'. I want to detect via IPN that my payment was successful or not. So i am using <strong>$_POST['payment_status']</strong> to trigger that so i could update my database on my site. Why is it returning <em>Completed</em> even if my payment was declined? Do you think $_POST['payment_status'] is not what i need? please help</p>