php mysql dtatabase listing help

[snake310]

Hello

this listing works fine , the only thing is that i dont want to list the same named thing twice, any1 has any idea

if(!$get2)
echo "<option>step 3</option>";
$a=z;
$id_tab=mysql_list_fields($get1,$get2,$id);
$nr_col=mysql_num_fields($id_tab);
@mysql_select_db($get1);
$inter="SELECT model FROM $get2";
$id_rez=mysql_query($inter);
$row=mysql_num_rows($id_rez);
while($rand=mysql_fetch_row($id_rez))
for($i=0;$i<$row;$i++){
for($n=$i;$n=0;$n--)
if($rand[$i]=$rand[$n-1])
$a=$i;
if($i!==$a)
if($rand[$i]!=NULL)
echo "<option>".$rand[$i]."</option>"; }

if($_GET['list3']=NULL)
echo "<option selected>Please Select</option>";
else
echo "<option selected>".$get3."</option>";
?>