IP Reg is a IPAM tool to keep track of assets, nodes (IP addresses, MAC addresses, DNS aliases) within different subnets, over different locations or even VLAN's. Written in PHP, used with a MySQL-database to have a unique insight in your local network.
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IP Reg, a PHP/MySQL IPAM tool
Copyright (C) 2007-2009 Wietse Warendorff (up to v0.5)
Copyright (C) 2011-2023 Thomas Hooge
SPDX-License-Identifier: GPL-3.0-or-later
$location_parent = sanitize($_GET['location_parent']);
// ************* <option value="0">{$lang_option_none}</option>
$sql = "SELECT location_id AS id, location_name AS name,
location_parent AS parent, location_sort AS sort
FROM location
ORDER BY location_parent, location_sort, location_name";
$sth = $dbh->query($sql);
$locations = $sth->fetchAll();
if (count($locations) > 0) {
foreach ($locations AS $location) {
$location_names[$location['id']] = $location['name'];
$parents[$location['parent']][] = $location['id'];
// look for parents
// function to look for parents and create a new array for every child
function location($parents, $parent = 0) {
foreach ($parents[$parent] as $child) {
if (isset($parents[$child])) {
// element has children
$children[$child] = location($parents, $child);
} else {
// no children, set NULL
$children[$child] = NULL;
return $children;
// recursive children check to template
function checkchildren($locations, $level) {
global $location_options;
global $location_names;
global $location_parent;
foreach ($locations as $parent=>$child) {
$row = str_repeat("-&nbsp;&nbsp;", $level) . $location_names[$parent];
$location_options[$parent] = $row;
if (isset($child)) {
checkchildren($child, $level+1);
$tree = location($parents);
// create tree option list
$location_options = array(0 => '-');
checkchildren($tree, 0);
$smarty->assign("location_options", $location_options);
$smarty->assign("location_parent", $location_parent);