Poll router (Tomato) for active devices on the network

Tomato_Device_List.php

<?php
/**
 * Returns an array of devices currently on the network
 * 
 * Created by PhpStorm.
 * User: davidkryzaniak
 * Date: 06/07/2014
 * Time: 22:05
 */
 
$username = 'admin';
$password = 'PASSWORD!';
$routerIp = '192.168.1.1'

$context = stream_context_create(array(
        'http' => array(
            'header'  => "Authorization: Basic " . base64_encode("$username:$password")
        )
    )
);
$data = file_get_contents("http://$routerIp/status-devices.asp", false, $context);

//dhcpd_lease = [ ['Name-Of-Device','192.168.1.100','**:**:**:**:**:52','0 days, 19:37:18'],[ ... ],[ ... ]]
//our poll is based off the dhcp_lease time. This might be an issue if you're using static IPs or some other magic
preg_match("/dhcpd_lease =(.+);\n/",$data,$list);

//start converting that string to an array
$found = substr(str_replace(array(' ',"'"),'',$list[1]),2,-2);

$results = array();
foreach(explode('],[',$found) as $single){
    $device = explode(',',$single);

    $singleDevice = array();
    $singleDevice['name'] = $device[0];
    $singleDevice['ip'] = $device[1];

    //key is the MAC address
    $results[$device[2]] = $singleDevice;
}

var_dump($results);