Session side-effects

[Azarath]

Ok, I tried to make a login page for my clan site, yet get this error:

Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

However, (at least in FireFox), when trying to log in again, it doesn't show...

I've had a look at a few other threads, and it looks like I shouldnt be using session_register() as I do...someone said the following:

Weedpacket wrote:

You're not still using session_register() are you?

session_start();
$_SESSION['variable']=$data_on_first_page;

session_start();
$data_on_second_page = $_SESSION['variable'];

Is so much simpler.

However, how I put it onto my page I don't get...this is the page:

<? if (!$_POST['name2'] || !$_POST['pass2']) {
echo "Please fill out all fields.";
exit;
}
$name = $_POST['name2']; 
$pass = $_POST['pass2']; 
include("config.php");
$logres = @mysql_num_rows(mysql_query("select * from members where name='$name' and pass='$pass'"));
if ($logres <= 0) {
echo "Login failed. If you have authority to log in, please check your spelling and try again.";
exit;
} else {
session_register("name");
session_register("pass");

include ("settings.php");

$grouppermissions = mysql_query("SELECT * FROM members WHERE name='$name' AND pass='$pass'");
while ($group = mysql_fetch_array($grouppermissions)){

echo "Welcome, $name <br>";
if ($group[group] == "Admin") {
include("adminoptions.php");
} ;
} ;
} ;
?>

Any help would be greatly appreciated :-)

[Rodney_H_]

this might work:

<?php
// start session
session_start();

if (!isset($_POST['name2']) || !isset($_POST['pass2'])) {
echo "Please fill out all fields.";
exit;
}

$name = trim($_POST['name2']); 
$pass = trim($_POST['pass2']); 
include("config.php");
$logres = @mysql_num_rows(mysql_query("select * from members where name='$name' and pass='$pass'"));
if ($logres <= 0) {
echo "Login failed. If you have authority to log in, please check your spelling and try again.";
exit;
}

else {
// set session keys and values
$_SESSION['name'] = $name;
$_SESSION['pass'] = pass;

include ("settings.php");

$grouppermissions = mysql_query("SELECT * FROM members WHERE name='$name' AND pass='$pass'");
while ($group = mysql_fetch_array($grouppermissions)){
	echo "Welcome, $name <br>";
	if ($group[group] == "Admin") {
	include("adminoptions.php");
	}
}
}
?>  

[colandy]

I believe that 'session_start();' must be the first statement on each of your pages, otherwise you are likely to lose your session data.

[topsub]

can't regester the session without starting it

"session_start()'