怎样行使php从数据库表现图像

我试图表现来自数据库的图像,我无法表现图像.但它表现像这样的用户1.jpg请看我的代码可以指导我怎样表现图像.

$sqlimage = "SELECT image FROM userdetail where `id` = $id1";
$imageresult1 = mysql_query($sqlimage);

while($rows = mysql_fetch_assoc($imageresult1))
{       
    $image = $rows['image'];    
    print $image;
}

Displaying an image from MySql Db.

$db = mysqli_connect("localhost","root","","DbName"); 
$sql = "SELECT * FROM products WHERE id = $id";
$sth = $db->query($sql);
$result=mysqli_fetch_array($sth);
echo '