Funziona perfettamente!
Grazie infinite bubi !!!


Codice corretto:
Codice PHP:
<? foreach ($rows as $row) { 
if(isset(
$tmpw) && $row['weightclass'] != $tmpw){
?> 
<tr><td colspan="4"></td></tr> 
<? 

$tmpw $row['weightclass'];//salvi la categoria peso in una variabile temporanea 
//e poi prosegui come prima 
?>
                          <tr> 
                            <td><?=$row['name']?></td>
                            <td><?=$row['weightclass']?></td>
                            <td><?=$row['class']?></td>
                            <td><?=$row['belt']?></td>
                            <td><?=$row['club']?></td>
                            <td><?=$row['team']?></td>
                            <td><?=$row['country']?></td>
                          </tr>
<? ?>