<?php
$network = $_GET['network_name'];

$conn = new PDO('mysql:host=sql.computerstudi.es;dbname=gc200339389', 'gc200339389', 'dFqU^s25');

$sql = "SELECT * FROM 'shows' WHERE network_name = :network_name";
$cmd->execute([":network_name" => $network]);
$cmd = $conn->prepare($sql);
$cmd-> execute();
$shows = $cmd->fetchAll();

echo '<table class="table table-striped"><thead><th>Show Name</th><th>First Year</th><th>Network Name</th></thead><tbody>';

foreach ($shows as $show) {
    echo '<tr><td>' . $show['show_name'] . '</td>
				<td>' . $show['first_year'] . '</td>
				<td>' . $show['network_name'] . '</td>
	      </td></tr>';
}

echo '</tbody></table>';

//7. disconnect
$conn = null;
?>

</body>
</html>