librenms-librenms/includes/html/pages/device/apps/portactivity.inc.php

<?php

$ports = get_portactivity_ports($device['device_id']);

sort($ports);

$link_array = [
    'page'   => 'device',
    'device' => $device['device_id'],
    'tab'    => 'apps',
    'app'    => 'portactivity',
];

print_optionbar_start();

echo 'Ports:';
$ports_int = 0;
while (isset($ports[$ports_int])) {
    $port = $ports[$ports_int];
    $label = $ports[$ports_int];

    if ($vars['port'] == $port) {
        $label = '>>' . $port . '<<';
    }

    $ports_int++;

    $append = '';
    if (isset($ports[$ports_int])) {
        $append = ', ';
    }

    echo generate_link($label, $link_array, ['port'=>$port]) . $append;
}

print_optionbar_end();

if (! isset($vars['port'])) {
    echo "Please select a port.\n";

    $graphs = [
        // No useful bits to display with out selecting anything.
    ];
} else {
    $graphs = [
        'portactivity_totals'=>'Total Connections',
        'portactivity_total_details'=>'Total Connections Details',
        'portactivity_to'=>'Connections To Server',
        'portactivity_from'=>'Connections From Server',
    ];
}

foreach ($graphs as $key => $text) {
    $graph_type = $key;
    $graph_array['height'] = '100';
    $graph_array['width'] = '215';
    $graph_array['to'] = \LibreNMS\Config::get('time.now');
    $graph_array['id'] = $app['app_id'];
    $graph_array['type'] = 'application_' . $key;

    if (isset($vars['port'])) {
        $graph_array['port'] = $vars['port'];
    }

    echo '<div class="panel panel-default">
    <div class="panel-heading">
        <h3 class="panel-title">' . $text . '</h3>
    </div>
    <div class="panel-body">
    <div class="row">';
    include 'includes/html/print-graphrow.inc.php';
    echo '</div>';
    echo '</div>';
    echo '</div>';
}