$conn=@mysql_connect("localhost","root","123") or die("服务器连接错误!"); //链接数据库
@mysql_select_db("upload",$conn) or die("未发现数据库!");
$query="select * from upfile where ftag=$fn";
$result=mysql_query($query);
if(!$result) die("error: mysql query");
$num=mysql_num_rows($result);
if($num
$data = mysql_result($result,0,"picture");
header("Content-type: image/JPEG",true);
echo $data;
?>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
