while ($row = mysql_fetch_array($query)) {
code here
}

$query1 = $db->query("SELECT * FROM tbl");
  while($row = $query1->fetch_assoc()){
      $var = $row["var"];
      ?>
  <li class="dropdown">
    <a href="$var" class="dropdown-toggle" data-toggle="dropdown">
      <?php echo $var; ?>
    </a>
    <div class="dropdown-menu">
      <div class="dropdown-inner">
        <ul class="list-unstyled">
        <?php while($row = $query1->fetch_assoc()){
      $var= $row["var"];?>
          <li><a href="$var"><?php echo $var?></a></li>
        <?php }?>
        </ul>
      </div>
    </div>
  </li><?php }?>