$statusNameShow = array(1, 2, 3, 4, 5, 6, 7, 22);
function oiErrorStatus($items_id, $item_status, $status_name)
{
    $result = "<strong>DP-{$items_id}</strong> Status is now <strong>" . $status_name[$item_status] . '</strong>';
    return $result;
}
//SUBMIT ACTION
if (isset($_POST['me_action'])) {
    if ($_POST['me_action'] == 'CHECKOISTATUS') {
        $items_id = tep_db_prepare_input($_POST['oi_id']);
        $status_tab = tep_db_prepare_input($_POST['status_tab']);
        $item = $class_do->retrieveDetail($items_id);
        if (count($item) == 0) {
            $result = "<br /><strong>DP-{$items_id}</strong> is not found";
        } else {
            $result = '<br />' . oiErrorStatus($items_id, $item['status'], $class_do->statusName());
        }
        echo utf8_encode($result);
        exit;
    } elseif ($_POST['me_action'] == 'UPDATEOISTATUS') {
        $items_id = tep_db_prepare_input($_POST['oi_id']);
        $old_status = tep_db_prepare_input($_POST['old_status']);
        $new_status = tep_db_prepare_input($_POST['new_status']);
        $item = $class_do->retrieveDetail($items_id);
        if ($item['status'] == $old_status) {
            $status_to_alert_success = array('3', '4');
            if ($new_status == 10) {
                $class_do->doCancelOrders($items_id, $old_status, $session_userinfo['username']);
            } else {
                $class_do->updateStatus($items_id, $new_status, $session_userinfo['username']);
            }