- base64_decode: documentation ( source)
- header: documentation ( source)
<?php
$demo="/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAIBAQIBAQICAgICAg";
$data = base64_decode($demo);
$im = imagecreatefromstring($data);
header('Content-Type: image/jpeg');
imagejpeg($im);
imagedestroy($im);