<?php
/**
* ot_coupon order-total module
*
* @package orderTotal
* @copyright Copyright 2003-2011 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
* @version $Id: ot_coupon.php 19063 2011-07-08 20:57:09Z wilt $
*/
/**
* Order Total class  to handle discount coupons
*
*/
class ot_coupon {
/**
* coupon title
*
* @var unknown_type
*/
var $title;
/**
* Output used on checkout pages
*
* @var unknown_type
*/
var $output;
/**
* Enter description here...
*
* @return ot_coupon
*/
function ot_coupon() {
$this->code = 'ot_coupon';
$this->header = MODULE_ORDER_TOTAL_COUPON_HEADER;
$this->title = MODULE_ORDER_TOTAL_COUPON_TITLE;
$this->description = MODULE_ORDER_TOTAL_COUPON_DESCRIPTION;
$this->user_prompt = '';
$this->sort_order = MODULE_ORDER_TOTAL_COUPON_SORT_ORDER;
$this->include_shipping = MODULE_ORDER_TOTAL_COUPON_INC_SHIPPING;
$this->include_tax = MODULE_ORDER_TOTAL_COUPON_INC_TAX;
$this->calculate_tax = MODULE_ORDER_TOTAL_COUPON_CALC_TAX;
$this->tax_class  = MODULE_ORDER_TOTAL_COUPON_TAX_CLASS;
$this->credit_class = true;
$this->output = array();
if (IS_ADMIN_FLAG === true) {
if ($this->include_tax == 'true' && $this->calculate_tax != "None") {
$this->title .= '<span class="alert">' . MODULE_ORDER_TOTAL_COUPON_INCLUDE_ERROR . '</span>';
}
}
}
/**
* Method used to produce final figures for deductions. This information is used to produce the output<br>
* shown on the checkout pages
*
*/
function process() {
global $order, $currencies;
$order_total = $this->get_order_total(isset($_SESSION['cc_id']) ? $_SESSION['cc_id'] : '');
$od_amount = $this->calculate_deductions($order_total['total']);
$this->deduction = $od_amount['total'];
if ($od_amount['total'] > 0) {
reset($order->info['tax_groups']);
$tax = 0;
while (list($key, $value) = each($order->info['tax_groups'])) {
if ($od_amount['tax_groups'][$key]) {
$order->info['tax_groups'][$key] -= $od_amount['tax_groups'][$key];
$order->info['tax_groups'][$key] = zen_round($order->info['tax_groups'][$key], $currencies->get_decimal_places($_SESSION['currency']));
$tax += $od_amount['tax_groups'][$key];
}
}
// free shipping for free shipping 'S' or percentage off and free shipping 'E' or amount off and free shipping 'O'
if ($od_amount['type'] == 'S' || $od_amount['type'] == 'E' || $od_amount['type'] == 'O') $order->info['shipping_cost'] = 0;
$order->info['total'] = $order->info['total'] - $od_amount['total'];
if (DISPLAY_PRICE_WITH_TAX != 'true') {
$order->info['total'] -= $tax;
}
$order->info['tax'] = $order->info['tax'] - $tax;
//      if ($this->calculate_tax == "Standard") $order->info['total'] -= $tax;
if ($order->info['total'] < 0) $order->info['total'] = 0;
$this->output[] = array('title' => $this->title . ': ' . $this->coupon_code . ' :',
'text' => '-' . $currencies->format($od_amount['total']),
'value' => $od_amount['total']);
}
}
/**
* Enter description here...
*
* @return unknown
*/
function selection_test() {
return false;
}
/**
* Enter description here...
*
*/
function clear_posts() {
unset($_POST['dc_redeem_code']);
unset($_SESSION['cc_id']);
}
/**
* Enter description here...
*
* @param unknown_type $order_total
* @return unknown
*/
function pre_confirmation_check($order_total) {
global $order;
$od_amount = $this->calculate_deductions($order_total);
//    print_r($od_amount);
$order->info['total'] = $order->info['total'] - $od_amount['total'];
if (DISPLAY_PRICE_WITH_TAX != 'true') {
$order->info['total'] -= $tax;
}
return $od_amount['total'] + (DISPLAY_PRICE_WITH_TAX == 'true' ? 0 : $od_amount['tax']);
}
/**
* Enter description here...
*
* @return unknown
*/
function use_credit_amount() {
return false;
}
/**
* Enter description here...
*
* @return unknown
*/
function credit_selection() {
global $discount_coupon;
// note the placement of the redeem code can be moved within the array on the instructions or the title
$selection = array('id' => $this->code,
'module' => $this->title,
'redeem_instructions' => MODULE_ORDER_TOTAL_COUPON_REDEEM_INSTRUCTIONS . ($discount_coupon->fields['coupon_code'] != '' ? MODULE_ORDER_TOTAL_COUPON_REMOVE_INSTRUCTIONS : '') . ($discount_coupon->fields['coupon_code'] != '' ? MODULE_ORDER_TOTAL_COUPON_TEXT_CURRENT_CODE . '<a href="javascript:couponpopupWindow(\'' . zen_href_link(FILENAME_POPUP_COUPON_HELP, 'cID=' . $_SESSION['cc_id']) . '\')">' . $discount_coupon->fields['coupon_code'] . '</a><br /><br />' : ''),
'fields' => array(array('title' => MODULE_ORDER_TOTAL_COUPON_TEXT_ENTER_CODE,
'field' => zen_draw_input_field('dc_redeem_code', '', 'id="disc-' . $this->code . '" onkeyup="submitFunction(0,0)" class="form-control"'),
'tag' => 'disc-'.$this->code
)));
return $selection;
}
/**
* Enter description here...
*
*/
function collect_posts() {
global $db, $currencies, $messageStack, $order;
global $discount_coupon;
// remove discount coupon by request
if (isset($_POST['dc_redeem_code']) && strtoupper($_POST['dc_redeem_code']) == 'REMOVE') {
unset($_POST['dc_redeem_code']);
unset($_SESSION['cc_id']);
$messageStack->add_session('checkout_payment', TEXT_REMOVE_REDEEM_COUPON, 'caution');
}
//    print_r($_SESSION);
// bof: Discount Coupon zoned always validate coupon for payment address changes
// eof: Discount Coupon zoned always validate coupon for payment address changes
if ((isset($_POST['dc_redeem_code']) && $_POST['dc_redeem_code'] != '') || (isset($discount_coupon->fields['coupon_code']) && $discount_coupon->fields['coupon_code'] != '')) {
// set current Discount Coupon based on current or existing
if (isset($_POST['dc_redeem_code']) && $discount_coupon->fields['coupon_code'] == '') {
$dc_check = $_POST['dc_redeem_code'];
} else {
$dc_check = $discount_coupon->fields['coupon_code'];
}
$sql = "select coupon_id, coupon_amount, coupon_type, coupon_minimum_order, uses_per_coupon, uses_per_user,
restrict_to_products, restrict_to_categories, coupon_zone_restriction
from " . TABLE_COUPONS . "
where coupon_code= :couponCodeEntered
and coupon_active='Y'
and coupon_type !='G'";
$sql = $db->bindVars($sql, ':couponCodeEntered', $dc_check, 'string');
$coupon_result=$db->Execute($sql);
if ($coupon_result->fields['coupon_type'] != 'G') {
if ($coupon_result->RecordCount() < 1 ) {
$messageStack->add_session('redemptions', TEXT_INVALID_REDEEM_COUPON,'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL',true, false));
}
$order_total = $this->get_order_total($coupon_result->fields['coupon_id']);
// left for total order amount vs qualified order amount just switch the commented lines
//        if ($order_total['totalFull'] < $coupon_result->fields['coupon_minimum_order']) {
if (strval($order_total['orderTotal']) < $coupon_result->fields['coupon_minimum_order']) {
$messageStack->add_session('redemptions', sprintf(TEXT_INVALID_REDEEM_COUPON_MINIMUM, $currencies->format($coupon_result->fields['coupon_minimum_order'])),'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL',true, false));
}
// JTD - added missing code here to handle coupon product restrictions
// look through the items in the cart to see if this coupon is valid for any item in the cart
$products = $_SESSION['cart']->get_products();
$foundvalid = true;
if ($foundvalid == true) {
$foundvalid = false;
for ($i=0; $i<sizeof($products); $i++) {
if (is_product_valid($products[$i]['id'], $coupon_result->fields['coupon_id'])) {
$foundvalid = true;
continue;
}
}
}
if (!$foundvalid) {
$this->clear_posts();
}
if (!$foundvalid) zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, 'credit_class_error_code=' . $this->code . '&credit_class_error=' . urlencode(TEXT_INVALID_COUPON_PRODUCT . ' ' . $dc_check), 'SSL',true, false));
// JTD - end of additions of missing code to handle coupon product restrictions
$date_query=$db->Execute("select coupon_start_date from " . TABLE_COUPONS . "
where coupon_start_date <= now() and
coupon_code='" . zen_db_prepare_input($dc_check) . "'");
if ($date_query->RecordCount() < 1 ) {
$messageStack->add_session('redemptions', TEXT_INVALID_STARTDATE_COUPON,'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL', true, false));
}
$date_query=$db->Execute("select coupon_expire_date from " . TABLE_COUPONS . "
where coupon_expire_date >= now() and
coupon_code='" . zen_db_prepare_input($dc_check) . "'");
if ($date_query->RecordCount() < 1 ) {
$messageStack->add_session('redemptions', TEXT_INVALID_FINISHDATE_COUPON,'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL', true, false));
}
$coupon_count = $db->Execute("select coupon_id from " . TABLE_COUPON_REDEEM_TRACK . "
where coupon_id = '" . (int)$coupon_result->fields['coupon_id']."'");
$coupon_count_customer = $db->Execute("select coupon_id from " . TABLE_COUPON_REDEEM_TRACK . "
where coupon_id = '" . $coupon_result->fields['coupon_id']."' and
customer_id = '" . (int)$_SESSION['customer_id'] . "'");
if ($coupon_count->RecordCount() >= $coupon_result->fields['uses_per_coupon'] && $coupon_result->fields['uses_per_coupon'] > 0) {
$messageStack->add_session('redemptions', TEXT_INVALID_USES_COUPON . $coupon_result->fields['uses_per_coupon'] . TIMES ,'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL', true, false));
}
if ($coupon_count_customer->RecordCount() >= $coupon_result->fields['uses_per_user'] && $coupon_result->fields['uses_per_user'] > 0) {
$messageStack->add_session('redemptions', sprintf(TEXT_INVALID_USES_USER_COUPON, $dc_check) . $coupon_result->fields['uses_per_user'] . ($coupon_result->fields['uses_per_user'] == 1 ? TIME : TIMES) ,'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL', true, false));
}
$_SESSION['cc_id'] = $coupon_result->fields['coupon_id'];
if ($_SESSION['cc_id'] > 0) {
$sql = "select coupon_id, coupon_amount, coupon_type, coupon_minimum_order, uses_per_coupon, uses_per_user,
restrict_to_products, restrict_to_categories, coupon_zone_restriction, coupon_code
from " . TABLE_COUPONS . "
where coupon_id= :couponIDEntered
and coupon_active='Y'";
$sql = $db->bindVars($sql, ':couponIDEntered', $_SESSION['cc_id'], 'string');
$coupon_result=$db->Execute($sql);
$foundvalid = true;
$check_flag = false;
// base restrictions zone restrictions for Delivery or Billing address
switch($coupon_result->fields['coupon_type']) {
case 'S': // shipping
// use delivery address
$check_zone_country_id = $order->delivery['country']['id'];
break;
case 'F': // amount
// use billing address
$check_zone_country_id = $order->billing['country']['id'];
break;
case 'O': // amount off and free shipping
// use delivery address
$check_zone_country_id = $order->delivery['country']['id'];
break;
case 'P': // percentage
// use billing address
$check_zone_country_id = $order->billing['country']['id'];
break;
case 'E': // percentage and Free Shipping
// use delivery address
$check_zone_country_id = $order->delivery['country']['id'];
break;
default:
// use billing address
$check_zone_country_id = $order->billing['country']['id'];
break;
}
//          $sql = "select zone_id, zone_country_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . $coupon_result->fields['coupon_zone_restriction'] . "' and zone_country_id = '" . $order->billing['country']['id'] . "' order by zone_id";
$sql = "select zone_id, zone_country_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . $coupon_result->fields['coupon_zone_restriction'] . "' and zone_country_id = '" . $check_zone_country_id . "' order by zone_id";
$check = $db->Execute($sql);
// base restrictions zone restrictions for Delivery or Billing address
switch($coupon_result->fields['coupon_type']) {
case 'S': // shipping
// use delivery address
$check_zone_id = $order->delivery['zone_id'];
break;
case 'F': // amount
// use billing address
$check_zone_id = $order->billing['zone_id'];
break;
case 'O': // amount off and free shipping
// use delivery address
$check_zone_id = $order->delivery['zone_id'];
break;
case 'P': // percentage
// use billing address
$check_zone_id = $order->billing['zone_id'];
break;
case 'E': // percentage and free shipping
// use delivery address
$check_zone_id = $order->delivery['zone_id'];
break;
default:
// use billing address
$check_zone_id = $order->billing['zone_id'];
break;
}
if ($coupon_result->fields['coupon_zone_restriction'] > 0) {
while (!$check->EOF) {
if ($check->fields['zone_id'] < 1) {
$check_flag = true;
break;
//              } elseif ($check->fields['zone_id'] == $order->billing['zone_id']) {
} elseif ($check->fields['zone_id'] == $check_zone_id) {
$check_flag = true;
break;
}
$check->MoveNext();
}
$foundvalid = $check_flag;
}
// remove if fails address validation
if (!$foundvalid) {
$messageStack->add_session('checkout_payment', TEXT_REMOVE_REDEEM_COUPON_ZONE, 'caution');
$this->clear_posts();
if (!$foundvalid) zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL',true, false));
} else {
//      if ($_POST['submit_redeem_coupon_x'] && !$_POST['gv_redeem_code']) zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, 'credit_class_error_code=' . $this->code . '&credit_class_error=' . urlencode(TEST_NO_REDEEM_CODE), 'SSL', true, false));
$messageStack->add('checkout', TEXT_VALID_COUPON,'success');
}
}
} else {
$messageStack->add_session('redemptions', TEXT_INVALID_REDEEM_COUPON,'caution');
$this->clear_posts();
zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL',true, false));
}
}
}
/**
* Enter description here...
*
* @param unknown_type $i
* @return unknown
*/
function update_credit_account($i) {
return false;
}
/**
* Enter description here...
*
*/
function apply_credit() {
global $db, $insert_id;
$cc_id = $_SESSION['cc_id'];
if ($this->deduction !=0) {
$db->Execute("insert into " . TABLE_COUPON_REDEEM_TRACK . "
(coupon_id, redeem_date, redeem_ip, customer_id, order_id)
values ('" . (int)$cc_id . "', now(), '" . $_SERVER['REMOTE_ADDR'] . "', '" . (int)$_SESSION['customer_id'] . "', '" . (int)$insert_id . "')");
}
$_SESSION['cc_id'] = "";
}
function calculate_deductions($order_total) {
global $db, $order, $messageStack, $currencies;
$currencyDecimalPlaces = $currencies->get_decimal_places($_SESSION['currency']);
$od_amount = array('tax'=>0, 'total'=>0);
if ($_SESSION['cc_id']) 
{
$coupon = $db->Execute("select * from " . TABLE_COUPONS . " where coupon_id = '" . (int)$_SESSION['cc_id'] . "'");
$this->coupon_code = $coupon->fields['coupon_code'];
$orderTotalDetails = $this->get_order_total($_SESSION['cc_id']);
if ($coupon->RecordCount() > 0 && $orderTotalDetails['orderTotal'] != 0 ) 
{
if (strval($orderTotalDetails['orderTotal']) >= $coupon->fields['coupon_minimum_order']) 
{
switch($coupon->fields['coupon_type'])
{
case 'S':
$od_amount['total'] = $orderTotalDetails['shipping'];
$od_amount['type'] = 'S';
$od_amount['tax'] = ($this->calculate_tax == 'Standard') ? $orderTotalDetails['shippingTax'] : 0;
if (isset($_SESSION['shipping_tax_description']) && $_SESSION['shipping_tax_description'] != '') {
$od_amount['tax_groups'][$_SESSION['shipping_tax_description']] = $od_amount['tax'];
}
return $od_amount;
break;
case 'P':
$od_amount['total'] = zen_round($orderTotalDetails['orderTotal']*($coupon->fields['coupon_amount']/100), $currencyDecimalPlaces);
$od_amount['type'] = $coupon->fields['coupon_type']; 
$ratio = $od_amount['total']/$orderTotalDetails['orderTotal'];
break;
case 'F':
$od_amount['total'] = zen_round($coupon->fields['coupon_amount'] * ($orderTotalDetails['orderTotal']>0), $currencyDecimalPlaces);
$od_amount['type'] = $coupon->fields['coupon_type']; // amount off 'F' or amount off and free shipping 'O'
$ratio = $od_amount['total']/$orderTotalDetails['orderTotal'];
break;
}
switch ($this->calculate_tax) 
{
case 'None':
break;
case 'Standard':
if ($od_amount['total'] >= $orderTotalDetails['orderTotal']) $ratio = 1;
foreach ($orderTotalDetails['orderTaxGroups'] as $key=>$value) 
{
$od_amount['tax_groups'][$key] = zen_round($orderTotalDetails['orderTaxGroups'][$key] * $ratio, $currencyDecimalPlaces);
$od_amount['tax'] += $od_amount['tax_groups'][$key];
if ($od_amount['tax_groups'][$key] == 0) unset($od_amount['tax_groups'][$key]);
}
if (DISPLAY_PRICE_WITH_TAX == 'true' && $coupon->fields['coupon_type'] == 'F') $od_amount['total'] = $od_amount['total'] + $od_amount['tax']; 
break;
case 'Credit Note':
$tax_rate = zen_get_tax_rate($this->tax_class);
$od_amount['tax'] = zen_calculate_tax($od_amount['total'], $tax_rate);
$tax_description = zen_get_tax_description($this->tax_class);
$od_amount['tax_groups'][$tax_description] = $od_amount['tax'];
}
}
}
}
//    print_r($order->info);
//    print_r($orderTotalDetails);echo "<br><br>";
//    echo 'RATIo = '. $ratio;
//    print_r($od_amount);
return $od_amount;
}
function get_order_total($couponCode)
{
global $order;
$orderTaxGroups = $order->info['tax_groups'];
$orderTotalTax = $order->info['tax'];
$orderTotal = $order->info['total'];
$products = $_SESSION['cart']->get_products();
for ($i=0; $i<sizeof($products); $i++) {
if (!is_product_valid($products[$i]['id'], $couponCode)) {
$products_tax = zen_get_tax_rate($products[$i]['tax_class_id']);
$productsTaxAmount = (zen_calculate_tax($products[$i]['final_price'], $products_tax))   * $products[$i]['quantity'];
$orderTotal -= $products[$i]['final_price'] * $products[$i]['quantity'];
if ($this->include_tax == 'true') {
$orderTotal -= $productsTaxAmount;
}
if (DISPLAY_PRICE_WITH_TAX == 'true')
{
$orderTotal -= $productsTaxAmount;
}
$orderTaxGroups[zen_get_tax_description($products[$i]['tax_class_id'])] -= $productsTaxAmount;
$orderTotalTax -= (zen_calculate_tax($products[$i]['final_price'], zen_get_tax_rate($products[$i]['tax_class_id'])))   * $products[$i]['quantity'];
}
}
if ($this->include_shipping != 'true')
{
$orderTotal -= $order->info['shipping_cost'];
if (isset($_SESSION['shipping_tax_description']) && $_SESSION['shipping_tax_description'] != '') 
{
$orderTaxGroups[$_SESSION['shipping_tax_description']] -= $order->info['shipping_tax']; 
$orderTotalTax -= $order->info['shipping_tax']; 
}
}
if (DISPLAY_PRICE_WITH_TAX != 'true')
{
$orderTotal -= $order->info['tax'];
}
return array('orderTotal'=>$orderTotal, 'orderTaxGroups'=>$orderTaxGroups, 'orderTax'=>$orderTotalTax, 'shipping'=>$order->info['shipping_cost'], 'shippingTax'=>$order->info['shipping_tax']);
}
/**
* Enter description here...
*
* @return unknown
*/
function check() {
global $db;
if (!isset($this->check)) {
$check_query = $db->Execute("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_ORDER_TOTAL_COUPON_STATUS'");
$this->check = $check_query->RecordCount();
}
return $this->check;
}
/**
* Enter description here...
*
* @return unknown
*/
function keys() {
return array('MODULE_ORDER_TOTAL_COUPON_STATUS', 'MODULE_ORDER_TOTAL_COUPON_SORT_ORDER', 'MODULE_ORDER_TOTAL_COUPON_INC_SHIPPING', 'MODULE_ORDER_TOTAL_COUPON_INC_TAX', 'MODULE_ORDER_TOTAL_COUPON_CALC_TAX', 'MODULE_ORDER_TOTAL_COUPON_TAX_CLASS');
}
/**
* Enter description here...
*
*/
function install() {
global $db;
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('This module is installed', 'MODULE_ORDER_TOTAL_COUPON_STATUS', 'true', '', '6', '1','zen_cfg_select_option(array(\'true\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Sort Order', 'MODULE_ORDER_TOTAL_COUPON_SORT_ORDER', '280', 'Sort order of display.', '6', '2', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function ,date_added) values ('Include Shipping', 'MODULE_ORDER_TOTAL_COUPON_INC_SHIPPING', 'true', 'Include Shipping in calculation', '6', '5', 'zen_cfg_select_option(array(\'true\', \'false\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function ,date_added) values ('Include Tax', 'MODULE_ORDER_TOTAL_COUPON_INC_TAX', 'false', 'Include Tax in calculation.', '6', '6','zen_cfg_select_option(array(\'true\', \'false\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function ,date_added) values ('Re-calculate Tax', 'MODULE_ORDER_TOTAL_COUPON_CALC_TAX', 'Standard', 'Re-Calculate Tax', '6', '7','zen_cfg_select_option(array(\'None\', \'Standard\', \'Credit Note\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, use_function, set_function, date_added) values ('Tax Class', 'MODULE_ORDER_TOTAL_COUPON_TAX_CLASS', '0', 'Use the following tax class when treating Discount Coupon as Credit Note.', '6', '0', 'zen_get_tax_class_title', 'zen_cfg_pull_down_tax_classes(', now())");
}
/**
* Enter description here...
*
*/
function remove() {
global $db;
$keys = '';
$keys_array = $this->keys();
for ($i=0; $i<sizeof($keys_array); $i++) {
$keys .= "'" . $keys_array[$i] . "',";
}
$keys = substr($keys, 0, -1);
$db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key in (" . $keys . ")");
}
}