Comment obtenir un enregistrement en boucle while

while($row = mysql_fetch_array($query )){ echo "<td>.$row['pid'].</td>"; echo "<td>.$row['owgh'].</td>"; echo "<td>.$row['nwgh'].</td>"; if (isset($before) and $before!=$row['pid']) { echo "<td>-----</td>"; } $before= $row['pid']; }