Вывод данных в столбцах

$query="SELECT chtoto FROM gdeto";
$result=mysql_query($query);
$rows=mysql_num_rows($result);
$stolb=3;
$strok=ceil($rows/$stolb);
for ($a=0; $a<$rows; $a++)
{
$row= mysql_fetch_array($result, MYSQL_NUM);
$arr[] =$row[0];
}
echo "<table width=\"300\" border=\"1\" cellspacing=\"0\" cellpadding=\"1\">\n";
for ($i = 1; $i <= $strok; $i++)
{
echo "<tr>";
for ($j = 0; $j < $stolb; $j++)
{
$n=$i+$strok*$j;
echo "<td>";
if ($arr != 0) echo "$arr[$n]";
else echo "&nbsp;";
echo "</td>";
}
echo "</tr>";
}
echo "</table>";

for ($i = 0; $i < $strok; $i++)
{
echo "<tr>";
for ($j = 0; $j < $stolb; $j++)