$nombre = 0;
while(....)
{
  echo".....";
  if( $nombre % 9 == 0 && $nombre != 0 )
    echo "<br />";
  $nombre++;
}

// connection à la DB
$link = mysql_connect ($host,$user,$pass) or die ('Erreur : '.mysql_error() );
mysql_select_db($db) or die ('Erreur :'.mysql_error());

// requête SQL qui compte le nombre total d'enregistrement dans la table et qui
//récupère tous les enregistrements
$select = 'SELECT photo_profil,firstname,name,id FROM devolia_rsed_user_profil';
$result = mysql_query($select,$link) or die ('Erreur : '.mysql_error() );
$total = mysql_num_rows($result);


// si on a récupéré un résultat on l'affiche.
if($total) {
     echo '<table bgcolor="#FFFFFF" border="1">'."\n";
       
    while($row = mysql_fetch_array($result)) {
       echo '<td bgcolor="#ffffff"><span><a href ="http://fr-findshare.grpminfo.fr/result_'.$row["firstname"].' '.$row["name"].'.html" target="_blank">
	   <img src="http://grpminfo.fr/face/devoliarsed-custom/uploads/all/'.$row["photo_profil"].'" title="'.$row["firstname"].' '.$row["name"].'" ALT="'.$row["firstname"].'.'.$row["name"].'" width="50" height="50" BORDER="0" >
	   </a></td>';      
    }
    echo '</table>'."\n";
    
}
else echo 'Pas d\'enregistrements dans cette table...';

// on libère le résultat
mysql_free_result($result);

<?php
header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
// inclusion des variable de configuration
include("config.php");
// connexion a la BD
include("connect.php");
$sql = "SELECT up.user_id, up.name, up.firstname, us.IP FROM devolia_rsed_users_sessions AS us, devolia_rsed_user_profil AS up, whoisonline AS w WHERE w.cIpName = us.IP AND us.uid = up.user_id";
$result = mysql_query($sql);
$nbResult = mysql_num_rows($result);
echo 'visiteur en ligne: '.$nbResult;
?>

SELECT up.user_id, up.name, up.firstname, us.IP 
FROM devolia_rsed_users_session AS us, devolia_rsed_user_profil AS up, whosisonline AS w
WHERE w.ClpName = us.IP AND us.uid = up.user_id;