<?php $db_host = 'localhost'; // don't forget to change $db_user = 'mysql-user'; $db_pwd = 'mysql-password';$database = 'test';$table = 'ae_gallery';// use the same name as SQL table$password = '123';// simple upload restriction,// to disallow uploading to everyoneif (!mysql_connect($db_host, $db_user, $db_pwd))    die("Can't connect to database");if (!mysql_select_db($database))    die("Can't select database");// This function makes usage of// $_GET, $_POST, etc... variables// completly safe in SQL queriesfunction sql_safe($s){    if (get_magic_quotes_gpc())        $s = stripslashes($s);    return mysql_real_escape_string($s);}// If user pressed submit in one of the formsif ($_SERVER['REQUEST_METHOD'] == 'POST'){    // cleaning title field    $title = trim(sql_safe($_POST['title']));    if ($title == '') // if title is not set        $title = '(empty title)';// use (empty title) string    if ($_POST['password'] != $password)  // cheking passwors        $msg = 'Error: wrong upload password';    else    {        if (isset($_FILES['photo']))        {            @list(, , $imtype, ) = getimagesize($_FILES['photo']['tmp_name']);            // Get image type.            // We use @ to omit errors            if ($imtype == 3) // cheking image type                $ext="png";   // to use it later in HTTP headers            elseif ($imtype == 2)                $ext="jpeg";            elseif ($imtype == 1)                $ext="gif";            else                $msg = 'Error: unknown file format';            if (!isset($msg)) // If there was no error            {                $data = file_get_contents($_FILES['photo']['tmp_name']);                $data = mysql_real_escape_string($data);                // Preparing data to be used in MySQL query                mysql_query("INSERT INTO {$table}                                SET ext='$ext', title='$title',                                    data='$data'");                $msg = 'Success: image uploaded';            }        }        elseif (isset($_GET['title']))      // isset(..title) needed            $msg = 'Error: file not loaded';// to make sure we've using                                            // upload form, not form                                            // for deletion        if (isset($_POST['del'])) // If used selected some photo to delete        {                         // in 'uploaded images form';            $id = intval($_POST['del']);            mysql_query("DELETE FROM {$table} WHERE id=$id");            $msg = 'Photo deleted';        }    }}elseif (isset($_GET['show'])){    $id = intval($_GET['show']);    $result = mysql_query("SELECT ext, UNIX_TIMESTAMP(image_time), data                             FROM {$table}                            WHERE id=$id LIMIT 1");    if (mysql_num_rows($result) == 0)        die('no image');    list($ext, $image_time, $data) = mysql_fetch_row($result);    $send_304 = false;    if (php_sapi_name() == 'apache') {        // if our web server is apache        // we get check HTTP        // If-Modified-Since header        // and do not send image        // if there is a cached version        $ar = apache_request_headers();        if (isset($ar['If-Modified-Since']) && // If-Modified-Since should exists            ($ar['If-Modified-Since'] != '') && // not empty            (strtotime($ar['If-Modified-Since']) >= $image_time)) // and grater than            $send_304 = true;                                     // image_time    }    if ($send_304)    {        // Sending 304 response to browser        // "Browser, your cached version of image is OK        // we're not sending anything new to you"        header('Last-Modified: '.gmdate('D, d M Y H:i:s', $ts).' GMT', true, 304);        exit(); // bye-bye    }    // outputing Last-Modified header    header('Last-Modified: '.gmdate('D, d M Y H:i:s', $image_time).' GMT',            true, 200);    // Set expiration time +1 year    // We do not have any photo re-uploading    // so, browser may cache this photo for quite a long time    header('Expires: '.gmdate('D, d M Y H:i:s',  $image_time + 86400*365).' GMT',            true, 200);    // outputing HTTP headers    header('Content-Length: '.strlen($data));    header("Content-type: image/{$ext}");    // outputing image    echo $data;    exit();}?><html><head><title>MySQL Blob Image Gallery Example</title></head><body><?phpif (isset($msg)) // this is special section for                 // outputing message{?><p style="font-weight: bold;"><?=$msg?><br><a href="<?=$PHP_SELF?>">reload page</a><!-- I've added reloading link, because     refreshing POST queries is not good idea --></p><?php}?><h1>Blob image gallery</h1><h2>Uploaded images:</h2><form action="<?=$PHP_SELF?>" method="post"><!-- This form is used for image deletion --><?php$result = mysql_query("SELECT id, image_time, title FROM {$table} ORDER BY id DESC");if (mysql_num_rows($result) == 0) // table is empty    echo '<ul><li>No images loaded</li></ul>';else{    echo '<ul>';    while(list($id, $image_time, $title) = mysql_fetch_row($result))    {        // outputing list        echo "<li><input type='radio' name='del' value='{$id}'>";        echo "<a href='{$PHP_SELF}?show={$id}'>{$title}</a> &ndash; ";        echo "<small>{$image_time}</small></li>";    }    echo '</ul>';    echo '<label for="password">Password:</label><br>';    echo '<input type="password" name="password" id="password"><br><br>';    echo '<input type="submit" value="Delete selected">';}?></form><h2>Upload new image:</h2><form action="<?=$PHP_SELF?>" method="POST" enctype="multipart/form-data"><label for="title">Title:</label><br><input type="text" name="title" id="title" size="64"><br><br><label for="photo">Photo:</label><br><input type="file" name="photo" id="photo"><br><br><label for="password">Password:</label><br><input type="password" name="password" id="password"><br><br><input type="submit" value="upload"></form></body></html>