<?php
$url = "../index.php?mod=addon&act=list";
require_once "../model/Addon.php";
$model = new Addon();
$addon_id = (int) $_POST['addon_id'];
$addon_name = $model->processData($_POST['addon_name']);
if ($addon_id > 0) {
$model->updateAddon($addon_id, $addon_name);
header('location:' . $url);
} else {
$model->insertAddon($addon_name);
header('location:' . $url);
}