最后说的用循环应该怎么循环?
do { $rowset = $stmt->fetchAll(); print_r($rowset);
} while ($stmt->nextRowset());
//这只是一种写法,也可以用while实现,可以去查查API
foreach ( $st->fetchAll ( PDO::FETCH_COLUMN ) as $row ) {
print $row;
print "<br />";
}