$db = mysqli_connect("localhost", "root", "", "dbname"); // keep your db name
$sql = "YOUR SQL CODE FOR RETRIEVING THE RECORD WHICH HOLDS YOUR IMAGE CONTENT";
$sth = $db->query($sql);
$result = mysqli_fetch_array($sth);
echo '<img src="data:image/jpeg;base64,'.base64_encode( $result['image'] ).'"/>'; // ASSUME THAT "image" IS THE NAME OF YOUR COLUMN WHICH HOLDS DATA ABOUT YOUR IMAGE