/**
* Gets the actual payment status in the database (useful for verifying a payment has actually been updated)
* @global WPDB $wpdb
* @param EE_Payment $payment
* @return string
*/
protected function _get_payment_status_in_db(EE_Payment $payment)
{
global $wpdb;
$esp_payment = $payment->get_model()->table();
return $wpdb->get_var($wpdb->prepare("SELECT STS_ID FROM {$esp_payment} WHERE PAY_ID = %d", $payment->ID()));
}