$r77 = mysql_query ("SELECT * FROM land ORDER BY num DESC") or die(mysql_error());
while ($rr77 = mysql_fetch_assoc($r77))
{
echo '<optgroup label='.$rr77['land'].'></optgroup>';}
$r77 = mysql_query ("SELECT * FROM land ORDER BY num DESC") or die(mysql_error());
while ($rr77 = mysql_fetch_assoc($r77))
{
echo '<optgroup label='.$rr77['land'].'></optgroup>';}