一段简单的php代码 php+mysql

<?
require_once("3.php");//包含语句
$conn=@mysql_connect("localhost","root","") or die ("连接错误");//数据库连接
mysql_select_db("newDB",$conn);//
mysql_query("SET NAMES gbk");
$sql = "select * from test";
$query = mysql_query($sql,$conn);
?>
<table width="200" border="1">
<?
while($rs=mysql_fetch_array($query)){
?>
  <tr>
    <td><? echo $rs[uid] ?></td>
    <td><? echo $rs[remark] ?></td>
    <td>&nbsp;</td>
  </tr>
<?
}
?>
</table>