<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>代号</td>
<td>姓名</td>
<td>性别</td>
<td>民族</td>
<td>生日</td>
<td>操作</td>
</tr>

<?php
$db = new MySQLi("localhost","root","","mydb");
if(mysqli_connect_error()){

　　die("连接失败");

} 
$sql = "select * from Info";
$result = $db->query($sql);
$attr = $result->fetch_all();
foreach($attr as $v)
{
 $sex = $v[2]? '男':'女';　　//三元运算符判断性别
 $sql = "select Name from Nation where Code ='$v[3]'";
 $result = $db ->query($sql);
 $attr = $result->fetch_assoc();
 echo "<tr>
 <td>{$v[0]}</td>
 <td>{$v[1]}</td>
 <td>{$sex}</td>
 <td>{$attr['Name']}</td>
 <td>{$v[4]}</td>
 <td>
  <a href='Delete.php?code={$v[0]}'>删除</a>
  <a href='Update.php?code={$v[0]}'>修改</a>
 </td>
 </tr>";
}
?>

</table>
<div>

<a href="Add.php" rel="external nofollow" >添加数据</a>

</div>