<?php for ($i = 8; $i <= 20; $i++) { ?>
					<tr>
							<td class="text-center"> <?= ($i < 10 ? '0' . $i:$i ) ?>:00 </td>

              <?php for ($j = 1; $j <= 7; $j++) { ?>

                <td class="text-center">
                <?=
                $adottnev = $db->query("SELECT * FROM idopontok WHERE nap = $j AND idopont = $i;")->fetchObject();


                if ($adottnev == NULL){print('Szabad');} else {
                  $adottnev->execute([
                  'nev' => $nev,
                  'nap' => $nap,
                  'idopont' => $idopont
                ]);
                print($nev);
                  }
                ?>
              </td>
					 <?php } ?>
          </tr>

      <?php } ?>