function getPersonData($isParticipant, $key)
{
    include 'GeneralHelper.php';
    include 'DBHelperClass.php';
    // create database helper
    $db = new DBHelperClass();
    // get person data
    $datas = array();
    if ($isParticipant) {
        $datas = $db->getPeople($isParticipant, $key);
    } else {
        $datas = $db->getPeople($isParticipant, $key);
    }
    // close database helper
    $db->close();
    // check if empty
    if (empty($datas)) {
        return array("success" => false);
    }
    $data = $datas[0];
    return array("success" => true, "data" => $data);
}