Fatal_Error....

<?
include("header.php");
include("config.php");

db_connect();

$req = mysql_query("SELECT clicks FROM $dbtable WHERE id='$id'");
$res = mysql_num_rows($req);

$i=0;
$row = mysql_fetch_array($req);
$row[clicks]++;
mysql_query("UPDATE $dbtable SET clicks='$row[clicks]' WHERE id='$id' ") or die ("ERREUR");

$req = "SELECT * FROM $dbtable WHERE id='$id'";
$res = mysql_query($req);

$username = mysql_result($res,$i,"username");
$email = mysql_result($res,$i,"email"); 
$url = mysql_result($res,$i,"url"); 
$photo = mysql_result($res,$i,"photo"); 
$bouton = mysql_result($res,$i,"bouton");
$clicks = mysql_result($res,$i,"clicks");
$ip = mysql_result($res,$i,"ip");
$date = mysql_result($res,$i,"date_reg");
$annee = date("Y", $date);
$mois = date("m", $date);
$jour = date("d", $date);
$heures = date("H", $date);
$minutes = date("i", $date);
$date = $jour."/".$mois."/".$annee." à ".$heures."h".$minutes;

$taillephoto = "$imgs_folder/$photo";
$size = getimagesize ($taillephoto);
$photosize_width = $size[0];
$photosize_height = $size[1];
$taillebouton = "$imgs_folder/$bouton";
$size = getimagesize ($taillebouton);
$boutonsize_width = $size[0];
$boutonsize_height = $size[1];


echo"<span class=\"Style1\">Fiche membre de </span><b>$username</b><br />";
echo"<span class=\"Style1\">Consultée $clicks fois</span>";
echo"<br />";
echo"<img src='$imgs_folder/$photo' width='100' height='100' border='0' alt='' /><br />";
//echo"$photosize_width x $photosize_height<br />";
echo"<img src='$imgs_folder/$bouton' width='88' height='31' border='0' alt='' /><br />";
//echo"$boutonsize_width x $boutonsize_height<br />";
echo"<br /><hr /><br />";
echo"<span class=\"Style1\">Pseudo : $username</span><br />";
echo"<span class=\"Style1\">membre depuis le</span>";
echo"<br />";
echo"<span class=\"Style1\">$date</span>";
echo"<br />";
echo"<span class=\"Style1\"><a href='mailto:$email'>&nbsp;$email</a></span><br />";

if(!empty($url)) {
	echo"<span class=\"Style1\"><a href='$url'target='_blank'>$url</a></span><br />";
		} 

echo"<span class=\"Style1\"><a href='javascript:self.close();'>Fermer la fiche</a></span>";
?>
<?
include("footer.php");
?>

$i = 0;
	while ($i < $total)
	{
	$username = mysql_result($requete,$i,"username");
	$myid = mysql_result($requete,$i,"id");