problem with session vars

d3k4n

i got 2 files, index.php and login.php. on index.php i got

...

if ($SESSION['usuario'] == NULL) {
$SESSION['usuario'] = 'anónimo';
}

...

echo 'Bienvenido <b>' . $_SESSION['usuario'] . '</b></p>';

...

and on login.php:

...

$conexion = mysql_connect('localhost', 'root', 'daniel17071985');
if (!$conexion) {
die('No se pudo establecer una conexion con la base de datos');
}
mysql_select_db('foro');
$query = "SELECT uNombre FROM usuarios WHERE uNombre = '" .
$POST['u_nombre'] . "' AND uPass = '" .
$POST['u_contraseña'] . "'";
$resultado = mysql_query($query);
if (!$resultado) {
die('No se pudo realizar la consulta a la base de datos: ' .
mysql_error());
}
while ($linea = mysql_fetch_array($resultado)) {
$SESSION['usuario'] = $linea['uNombre'];
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
header('Location: [url]http://[/url]' . $SERVER['HTTP_HOST']
. dirname($_SERVER['PHP_SELF'])
. '/index.php');
}

The login script works perfectly fine (finds user ok) and it takes me to index.php. Problem is, on index.php, i get 'Bienvenido anónimo' on the echo, instead of the new name (which happens to be d3k4n :p ) All those other headers appart from location i use to take of the cache on html 1.0 and 1.1. I also tried using if (!isset($_...) and doesn't work either.

TheBB

Are you sure you have session_start() somewhere in the script? You have to call session_start() before you can use $_SESSION[].

d3k4n

yeah, must be that. been reading other posts and i'll try puttin a session_start and headers to disable the cache

d3k4n

i tried putting session_start() if the $_SESSION['user'] var wasn't declared and i also put headers at the begining of the file to disable caché, but it doesn't seem to work. i think the problem is when you go from the second to the first page, it doesn't refresh. i've put the code at http://www.pastebin.com/89095

jpmoriarty

but if session_start() isn't called, then $_SESSION won't exist - so you can't call it if the variable isn't there, it never will be!

Roger_Ramjet

Try this for a great article including the code you need.

Managing Users with PHP Sessions and MySQL @ http://www.sitepoint.com/print/users-php-sessions-mysql

They have a code archive where you can download all the code in the article. All you have to do is set your own database params, and edit in your own messages. Works right out of the 'box'.

d3k4n

ok, took session_start() out of the if statement and put it at the beginning of index.php, before the includes. Still doesn't work. I tried using header("Cache-Control: private") instead of expire() function and nothing.