<?php
                          $objcon=new Conectardb();
                          $objcon->get_conexio();
                          $objpro=new productes();
                          $llistat_categosubcatego=$objpro->llistarcategosubcatego();
                          $files=$llistat_categosubcatego->num_rows;

                          if ($files > 0){

                              while( $categoria = $llistat_categosubcatego->fetch_array()){

                                  ?>
                                         <ul>

                                               <li>

                                             <?php if ($bol != $categoria["nomcat"]) {
                                                   ?>
                                                <a href=""><?php echo $categoria["nomcat"];?></a>
                                                <?php $bol=$categoria["nomcat"];
                                                   }
                                                    ?>

                                                    <ul>

							<li><a href=""><?php echo $categoria["nomsub"];?></a></li>

                                                    </ul>
                                                </li>

                                        </ul>

                      <?php