Method setLastVisit

/**
 * Updates last visit time of user
 *
 * @param   integer  $timeStamp  The timestamp, defaults to 'now'.
 * @param   integer  $userId     The user id (optional).
 *
 * @return  boolean  False if an error occurs
 *
 * @since   1.7.0
 */
public function setLastVisit($timeStamp = null, $userId = null)
{
    // Check for User ID
    if (\is_null($userId)) {
        if (isset($this)) {
            $userId = $this->id;
        } else {
            jexit('No userid in setLastVisit');
        }
    }
    // If no timestamp value is passed to function, then current time is used.
    if ($timeStamp === null) {
        $timeStamp = 'now';
    }
    $date = Factory::getDate($timeStamp);
    $userId = (int) $userId;
    $lastVisit = $date->toSql();
    // Update the database row for the user.
    $db = $this->_db;
    $query = $db->getQuery(true)->update($db->quoteName($this->_tbl))->set($db->quoteName('lastvisitDate') . ' = :lastvisitDate')->where($db->quoteName('id') . ' = :id')->bind(':lastvisitDate', $lastVisit)->bind(':id', $userId, ParameterType::INTEGER);
    $db->setQuery($query);
    $db->execute();
    return true;
}