导出数据库数据到excel文件

<?php 
//开启输出缓存
ob_start();
//连接数据库，查询数据
$conn=mysql_connect('127.0.0.1','root','8888');
mysql_select_db('test',$conn);
$query=mysql_query("select * from category") ;   

?>
<table width="300" border="0">  
	<tr>  
    <th align="center">ID</th>  
    <th align="center">pID</th>  
    <th align="center">name</th>  
     
  </tr> 
<?php
while($myrow = mysql_fetch_array($query)){   
?>  
  <tr>  
    <td align="center"><?php echo $myrow["categoryId"]; ?></td>  
    <td align="center"><?php echo $myrow["parentId"]; ?></td>  
    <td align="center"><?php echo $myrow["categoryName"]; ?></td>  
      
  </tr>  
<?php
}  
?>  
</table>  
 
<?php 
    //获取缓存区数据
    $data = ob_get_contents();
    ob_end_clean(); 
    //保存到excel文件
    $fp=fopen('data.xls',"wb");
    fwrite($fp,$data);
    fclose($fp);

echo 'ok';
?>