i am trying to make html works and the right way to place it so it works placing html inside php code
<?php echo <td class=\"network\">".$show."</td>;?>
This does not give the impression that you've really tried much, or researched the issue.
<?php echo "<td class=\"network\">".$show."</td>";?>
^^ Should work to output HTML tags. (Though invalid as td should exist inside tables.)
Also note you can use different quotes to reduce the need for escaping. E.g.
<?php echo '<td class="network">'.$show.'</td>';?>