chamilo-lms/main/inc/ajax/statistics.ajax.php

<?php
/* For licensing terms, see /license.txt */

/**
 * Responses to AJAX calls.
 */
require_once __DIR__.'/../global.inc.php';

api_protect_admin_script();

$action = isset($_REQUEST['a']) ? $_REQUEST['a'] : null;
$sessionDuration = isset($_GET['session_duration']) ? (int) $_GET['session_duration'] : 0;

switch ($action) {
    case 'get_user_session':
        $list = [];
        $urlList = UrlManager::get_url_data();
        $sessionUrl = api_get_path(WEB_CODE_PATH).'session/resume_session.php?id_session=';

        $start = isset($_GET['start']) ? Database::escape_string(api_get_utc_datetime($_GET['start'])) : api_get_utc_datetime();
        $end = isset($_GET['end']) ?  Database::escape_string(api_get_utc_datetime($_GET['end'])) : api_get_utc_datetime();

        foreach ($urlList as $url) {
            $urlId = $url['id'];

            $sessionList = SessionManager::get_sessions_list([], [], null, null, $urlId);
            foreach ($sessionList as $session) {
                $sessionId = $session['id'];
                $row = [];
                $row['url'] = $url['url'];
                $row['session'] = Display::url(
                    $session['name'],
                    $sessionUrl.$sessionId
                );

                $table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
                $sql = "SELECT
                        count(DISTINCT user_id) count
                        FROM $table
                        WHERE
                            login_course_date >= '$start' AND  
                            logout_course_date <= '$end' AND                    
                            session_id = '$sessionId' ";

                $result = Database::query($sql);
                $result = Database::fetch_array($result);
                $row['count'] = $result['count'];
                $list[] = $row;
            }
        }

        echo json_encode($list);
        break;
        break;
    case 'recentlogins':
        header('Content-type: application/json');
        $list = [];
        $all = Statistics::getRecentLoginStats(false, $sessionDuration);
        foreach ($all as $tick => $tock) {
            $list['labels'][] = $tick;
        }

        $list['datasets'][0]['label'] = get_lang('Logins');
        $list['datasets'][0]['fillColor'] = "rgba(151,187,205,0.2)";
        $list['datasets'][0]['strokeColor'] = "rgba(151,187,205,1)";
        $list['datasets'][0]['pointColor'] = "rgba(151,187,205,1)";
        $list['datasets'][0]['pointStrokeColor'] = "#fff";
        $list['datasets'][0]['pointHighlightFill'] = "#fff";
        $list['datasets'][0]['pointHighlightStroke'] = "rgba(151,187,205,1)";

        foreach ($all as $tick => $tock) {
            $list['datasets'][0]['data'][] = $tock;
        }

        $list['datasets'][1]['label'] = get_lang('DistinctUsersLogins');
        $list['datasets'][1]['fillColor'] = "rgba(0,204,0,0.2)";
        $list['datasets'][1]['strokeColor'] = "rgba(0,204,0,1)";
        $list['datasets'][1]['pointColor'] = "rgba(0,204,0,1)";
        $list['datasets'][1]['pointStrokeColor'] = "#fff";
        $list['datasets'][1]['pointHighlightFill'] = "#fff";
        $list['datasets'][1]['pointHighlightStroke'] = "rgba(0,204,0,1)";

        $distinct = Statistics::getRecentLoginStats(true, $sessionDuration);
        foreach ($distinct as $tick => $tock) {
            $list['datasets'][1]['data'][] = $tock;
        }

        echo json_encode($list);
        break;
}