1) Base64 option
Work with a single line, image/png
for a png image and image/jpeg
for a jpg one :
echo '<img src="data:image/png;base64,'.base64_encode($blob).'"/>';
example :
<div style="background-color:black; text-align:center; padding: 5px;">
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAwBAMAAACh2TSJAAAALVBMVEUAAADtNTX////3n5/+9fX719f7zMz5tLTzfHzuQED//f31jY3ybGzxXV3wVFRaxp+rAAAAAXRSTlMAQObYZgAAALVJREFUOMut0rENAjEQRNHdC4kY0QBaAQUQX0QAFSAKIKQEKiAA6VqgIkriApuV1x7pQPz0aWwHljLMpZ0CRDBGoXmeghGYKFJsUo90giAImCgV5OJF+oOgKE48MlGgs2VLBIunWesw0a1ZHqF82c7GmmIfUSpgotOly29DFPFJFDEhkgIT/V5mZuvj6XofKrHU6vyI4u37IYi36aN4h5tL7PJyif1dvCgEpapzISbCTEj5R78BZq5A5Ldh2XYAAAAASUVORK5CYII">
</div>
2) Dedicated page
With many big picture on the same page, the base64 may be not the good choice
Base64 is cool, but a bit heavy (usually around twice as the binary value encoded) and can’t be cached by the browser as it’s a part of the page, and not a page by itself (like a picture).
In this case, the best is to use a specific php page to display your picture :
On the main page use instead of base 64 : echo '<img src="https://stackoverflow.com/questions/34111390/image.php?id=".$id.'"/>';
with the id of the line you want the image.
On your image.php
, for the basic you should use this :
// << include the $pdo here
$query = $pdo->prepare("SELECT `content` FROM `adsubm` WHERE `id` = :id" );
$query->execute(array(':id'=>$_GET['id']));
$data = $query->fetch();
if(empty($data)))
header("HTTP/1.0 404 Not Found");
else {
header('Content-type: image/jpeg');
echo $data['content'];
}