Probleem met for lus

Hallo iedereen ,

$id = $_GET['sID'];

function getpostsql($id) {

if ($id == 1) {
$sql= "SELECT * FROM clans ORDER BY thread_id DESC";
}

elseif ($id == 2) {
$sql= "SELECT * FROM pvp ORDER BY thread_id DESC";
}

elseif ($id == 3) {
$sql= "SELECT * FROM pvm ORDER BY thread_id DESC";
}

else {
$sql = "";
}

return $sql;

}

$postsql = getpostsql($id);
$result = mysql_query($postsql);

$postdata[] = array();

// SET UP A 2D ARRAY TO HOLD ALL THE DATA FROM THE POSTS TABLE

$totalrows = mysql_num_rows($result);

if ($totalrows > 0) {

for ($i = 0; $i < $totalrows; $i++) {
$postsql2 = getpostsql($id);
$result3 = mysql_query($postsql2);
$postdata[$i] = mysql_fetch_array($result3);
echo $postdata[$i]['topic'];
}
}



Als bovenstaande output krijg ik 10 keer de topic titel van 1 rij , ipv 10 verschillende topic titels.

Kan iemand mij aub uitleggen wat ik verkeerd doe??

Bedankt,
Jeremy