public static function addPayPalCustomer($id_customer, $email)
{
if (!PayPal::getPayPalEmailByIdCustomer($id_customer)) {
Db::getInstance()->Execute('
INSERT INTO `' . _DB_PREFIX_ . 'paypal_customer` (`id_customer`, `paypal_email`)
VALUES(' . (int) $id_customer . ', \'' . pSQL($email) . '\')');
return Db::getInstance()->Insert_ID();
}
return false;
}