Codice PHP:

$sqlId="SELECT IdChiamata FROM Call where Matricola='".$Matr."' LIMIT 50";                                
$risId = mysql_query($sqlId) or die(mysql_error());            while($rId=mysql_fetch_array($risId)){                $IdCall = $rId["IdChiamata"];                    if($IdNew == ""){
            $IdNew = $IdCall;
        $OldId[]=$IdNew;
    }else{
        for($x=0;$x < count($OldId);$x++){
        if($IdCall > $OldId[$x]){
            break;
        }else{
            $IdNew = $IdCall;
            [COLOR=orangered]$OldId[] = $IdNew;[/COLOR]         }
    }    
}
if($cont!= $contOld){$contOld = $cont;                ?> <td><font face="Tahoma" size="1">[url="TabellaHD.php?loid=2&id=<?=$id?>&IdCall=<?=$IdCall?>"][b]<? echo $cont ?>[/b][/url][b][/b]</font></td>
    <?
                                    }            
                                        }
                                         ?>

perchè quando inserisco la riga in rosso m,i da quell'errore???