我希望a href中的var fam\u id作为会话var

$sql = "SELECT * FROM kinderen WHERE fam_id between $fammin and $fammax order by fam_id"; 
$result = $conn->query($sql);
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "<tr>
                <td><a href='kindtwee.php'>". $row["fam_id"] ." </a></td>
                <td>". $row["naam"] ."</td><td>". $row ["vnaam"] ."</td>
                <td>". $row ["pnaam"] ." </td>  
                <td>". $row ["pvnaam"] ."</td>
            </tr>";
    }
}