librenms-librenms/includes/html/graphs/application/pureftpd_users.inc.php

<?php

require 'includes/html/graphs/common.inc.php';
$scale_min = 0;
$nototal = 1;
$unit_text = 'Users connected';
$unitlen = 15;
$bigdescrlen = 20;
$smalldescrlen = 15;
$colours = 'mixed';

$array = [
    'total' => 'Total',
];

$rrd_filename = Rrd::name($device['hostname'], ['app', 'pureftpd', $app->app_id, 'users']);

$rrd_list = [];
if (Rrd::checkRrdExists($rrd_filename)) {
    $i = 0;
    foreach ($array as $ds => $descr) {
        $rrd_list[$i]['filename'] = $rrd_filename;
        $rrd_list[$i]['descr'] = $descr;
        $rrd_list[$i]['ds'] = $ds;
        $i++;
    }
} else {
    echo "file missing: $rrd_filename";
}

require 'includes/html/graphs/generic_multi_line_exact_numbers.inc.php';