librenms-librenms/includes/discovery/sensors/temperatures/lm-sensors.inc.php

<?php

if ($device['os'] == 'linux' || $device['os'] == 'pktj' || $device['os'] == 'cumulus') {
    $oids = snmp_walk($device, 'lmTempSensorsDevice', '-Osqn', 'LM-SENSORS-MIB');
    d_echo($oids."\n");

    $oids = trim($oids);
    if ($oids) {
        echo 'LM-SENSORS-MIB: ';
    }

    foreach (explode("\n", $oids) as $data) {
        $data = trim($data);
        if ($data) {
            list($oid,$descr) = explode(' ', $data, 2);
            $split_oid        = explode('.', $oid);
            $temperature_id   = $split_oid[(count($split_oid) - 1)];
            $temperature_oid  = "1.3.6.1.4.1.2021.13.16.2.1.3.$temperature_id";
            $temperature      = (snmp_get($device, $temperature_oid, '-Ovq') / 1000);
            $descr            = str_ireplace('temperature-', '', $descr);
            $descr            = str_ireplace('temp-', '', $descr);
            $descr            = trim($descr);
            if ($temperature != '0' && $temperature <= '1000') {
                discover_sensor(
                    $valid['sensor'],
                    'temperature',
                    $device,
                    $temperature_oid,
                    $temperature_id,
                    'lmsensors',
                    $descr,
                    '1000',
                    '1',
                    null,
                    null,
                    null,
                    null,
                    $temperature
                );
            }
        }
    }
}