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; }