Better code indentation I'm sure code indentation is a basic requirement for correct development. I have checked out may pages to learn more and results of my coding are below.

I like to share that here to receive opinions and suggestions.

&lt;?php
include_once "../../config.php";

// Start
if (!isset($_SESSION)) session_start();
$level = 2;

if (!isset($_SESSION['user_id']) OR ($_SESSION['user_levell'] &gt; $req_level)) {
    header("Location: $url/dashboard.php?error=1"); exit;
}

// Load permissions
$result = mysql_query("
    SELECT conf
    FROM adm_users
    WHERE user_id=".$_SESSION['user_id']
);
$row = mysql_fetch_array($result, MYSQL_BOTH);
    $access = $row['acess'];

if (($_SESSION['user_level'] != "1") &amp;&amp; ($access_config != "1")) {
    header("Location: index.php?error=1"); exit;
}
// End

include_once "$url/includes/head.php";
include_once "$url/includes/menu.php";


// Load ser
$result = mysql_query("
    SELECT  *
    FROM    adm_ser
    WHERE   ser_id='$ser_id'
");

$row = mysql_fetch_array($result, MYSQL_BOTH);
    $ser_id = stripslashes($row['ser_id']);
    $ser_cod = stripslashes($row['ser_cod']);       
    $ser_cd = stripslashes($row['ser_cnpj']);
    $ser_name = stripslashes($row['ser_name']);
    $ser_status_id = stripslashes($row['ser_status_id']);

// Dropdown Ser Status
$sql2 = mysql_query("
    SELECT *
    FROM adm_ser_status
    WHERE status_id=".$ser_status_id
);

while($row = mysql_fetch_array($sql2)) {
    $status_id_dropdown = $row['status_id'];
    $status_de_dropdown = $row['status_desc'];
}  
?&gt;
You don't need to indent your $ser_ value assignments.  Indentation should be left for within a class, method, loop, etc as you do for most of your other code.  I notice that you separate your MySQL statement, which can be done, but on such a simple query, really isn't needed as the only purpose for doing that is to help readability when it is a complicated query. ^^

On a side note, mysql_ functions are deprecated now, and you should switch to mysqli_ (or the MySQLi class), or (preferably) PDO.