Problem with storing images in mysql

[konx80]

I'm having a problem getting images to work after uploading/downloading from mysql database.  Files seem to upload and download normally.  when i open one of my downloaded photos i get "no preview available".

 

code:

 

uploader (form submission):

            $img    =   "STOCK_".mktime().".jpg";
            $text   =   $_POST['text'];
            $md5    =   md5($img);
            $type   =   $_FILES['file']['type'];
            $size   =   $_FILES['file']['size'];

            $fp      = fopen($_FILES['file']['tmp_name'], 'r');
            $content = fread($fp, filesize($_FILES['file']['tmp_name']));
            $content = addslashes($content);
            fclose($fp);

            $query  =   "INSERT INTO images SET name='$img',data='$content',md5='$md5',type='$type',size='$size'";
            mysql_query($query); 

---------------------------------------------------------

 

downloader:

    ob_start();
    include('config.php');
    $iid    =   $_GET['iid'];
    $query  =   "SELECT name,data,md5,type,size FROM images WHERE id='$iid' LIMIT 1";
    $result =   mysql_query($query);
    list($name,$data,$md52,$type,$size)  =   mysql_fetch_array($result);
    header("Content-Length: $size");
    header("Content-Type: $type");
    header("Content-Disposition: attachment; filename=$name");
    echo $data;
    exit;
    ob_end_flush();

 

any help is appreciated, thanks!