More collectd and pfSense Fun!

<?php
$hostname = getenv("COLLECTD_HOSTNAME");
$interval = getenv("COLLECTD_INTERVAL");
$content = file_get_contents("/var/dhcpd/var/db/dhcpd.leases");

$leases = [];
$lease_count = 0;

if (preg_match_all("/lease (?<ip>[\d\.]+) \{\s+starts \d (?<starts>[\d\/]+\s[\d\:]+);\s+ends \d (?<ends>[\d\/]+\s[\d\:]+);/is", $content, $matches)) {
    foreach($matches["ip"] as $key => $ip) {
        $end_date = strtotime($matches["ends"][$key]);
        if ($end_date > time()) {
            $leases[$ip] = [$ip, $matches["starts"][$key], $matches["ends"][$key]];
        }
    }

    $lease_count = count($leases);
}

echo "PUTVAL \"$hostname/dhcp/gauge-dhcp_leases\" interval=$interval N:$lease_count\n";

$keys = ["dev.cpu.1.temperature", "dev.cpu.0.temperature"];

foreach ($keys as $key) {
    $temp = exec("sysctl $key");
    if (preg_match('!([0-9\.]+)C$!i', $temp, $matches)) {
        $temp = $matches[1];
        echo "PUTVAL \"$hostname/cpu_temp/gauge-$key\" interval=$interval N:$temp\n";
    }
}

$keys = ["hw.acpi.thermal.tz1.temperature", "hw.acpi.thermal.tz0.temperature"];

foreach ($keys as $key) {
    $temp = exec("sysctl $key");
    if (preg_match('!([0-9\.]+)C$!i', $temp, $matches)) {
        $temp = $matches[1];
        echo "PUTVAL \"$hostname/sensors/temperature-$key\" interval=$interval N:$temp\n";
    }
}

$temp = exec('sudo smartctl -a /dev/ada0 | grep 0x0022 | grep Temp | awk \'{print $10}\'');
echo "PUTVAL \"$hostname/hddtemp/temperature-ada0\" interval=$interval N:$temp\n";

ob_start();
passthru("upsc LocalUPS@localhost");
$data = ob_get_clean();

if (preg_match_all("!(.*): (.*)!i", $data, $foo)) {
    $find_keys = ["battery.charge", "battery.runtime", "battery.voltage", "input.voltage", "ups.load"];

    $keyed = array_combine($foo[1], $foo[2]);
    foreach ($find_keys as $key) {
        if (isset($keyed[$key])) {
            $temp = $keyed[$key];
            echo "PUTVAL \"$hostname/ups/gauge-$key\" interval=$interval N:$temp\n";
        }
    }
}

fclose(STDOUT);