ecs_header("Location: user.php?act=message_list&order_id={$order_id}\n");
    exit;
} elseif ($action == 'del_cmt') {
    $id = isset($_GET['id']) ? intval($_GET['id']) : 0;
    if ($id > 0) {
        $sql = "DELETE FROM " . $ecs->table('comment') . " WHERE comment_id = '{$id}' AND user_id = '{$user_id}'";
        $db->query($sql);
    }
    ecs_header("Location: user.php?act=comment_list\n");
    exit;
} elseif ($action == 'merge_order') {
    include_once ROOT_PATH . 'includes/lib_transaction.php';
    include_once ROOT_PATH . 'includes/lib_order.php';
    $from_order = isset($_POST['from_order']) ? trim($_POST['from_order']) : '';
    $to_order = isset($_POST['to_order']) ? trim($_POST['to_order']) : '';
    if (merge_user_order($from_order, $to_order, $user_id)) {
        show_message($_LANG['merge_order_success'], $_LANG['order_list_lnk'], 'user.php?act=order_list', 'info');
    } else {
        $err->show($_LANG['order_list_lnk']);
    }
} elseif ($action == 'return_to_cart') {
    include_once ROOT_PATH . 'includes/cls_json.php';
    include_once ROOT_PATH . 'includes/lib_transaction.php';
    $json = new JSON();
    $result = array('error' => 0, 'message' => '', 'content' => '');
    $order_id = isset($_POST['order_id']) ? intval($_POST['order_id']) : 0;
    if ($order_id == 0) {
        $result['error'] = 1;
        $result['message'] = $_LANG['order_id_empty'];
        die($json->encode($result));
    }

function action_merge_order()
{
    $user = $GLOBALS['user'];
    $_CFG = $GLOBALS['_CFG'];
    $_LANG = $GLOBALS['_LANG'];
    $smarty = $GLOBALS['smarty'];
    $db = $GLOBALS['db'];
    $ecs = $GLOBALS['ecs'];
    $user_id = $_SESSION['user_id'];
    include_once ROOT_PATH . 'includes/lib_transaction.php';
    include_once ROOT_PATH . 'includes/lib_order.php';
    $from_order = isset($_POST['from_order']) ? trim($_POST['from_order']) : '';
    $to_order = isset($_POST['to_order']) ? trim($_POST['to_order']) : '';
    /* 代码增加_start By www.68ecshop.com */
    $sql = "select supplier_id from " . $ecs->table('order_info') . " where order_sn='{$from_order}' ";
    $supplier_id_from = $db->getOne($sql);
    $sql = "select supplier_id from " . $ecs->table('order_info') . " where order_sn='{$to_order}' ";
    $supplier_id_to = $db->getOne($sql);
    if ($supplier_id_from != $supplier_id_to) {
        show_message('由于供货商不同,订单合并失败', $_LANG['order_list_lnk'], 'user.php?act=order_list', 'info');
    }
    /* 代码增加_end By www.68ecshop.com */
    if (merge_user_order($from_order, $to_order, $user_id)) {
        show_message($_LANG['merge_order_success'], $_LANG['order_list_lnk'], 'user.php?act=order_list', 'info');
    } else {
        $err->show($_LANG['order_list_lnk']);
    }
}