Undefined index

[Philipp_G__rard]

Guess I'm not a noob, but this question will sound like I'm one ...

What does

Notice: Undefined index: ...

mean?

😃

Cheers,
Phil

[Pig]

how about some more details.

[jcacy]

I'm getting the message, too. Mine occurs when a login page attempts to pass variables to the opening page.

The author of this system uses this to send one of the variables:

<form method="POST" action="../main/main_screen.php?auth=login" target="_top" name="login_form">

The variable auth is subsequently accessed with a $_GET in the receiving code. For some reason, the system complains that the variable auth has not been set.

I've tried using a hidden variable on the form and accessing it with $_POST, and that didn't work either. I'm (we're) probably missing something simple, but I'm about at my wits end.

[Philipp_G__rard]

To be exact: it's damn simple 😉

try sth. like this:

if (!isset($_GET['mode'])){ $_GET['mode'] = ""; }

[kevinsequeira]

jcacy could u post ure code

reg
kevin

[jcacy]

Here is the line that sends the problem variable:

<form method="POST" action="../main/main_screen.php?auth=login" target="_top" name="login_form">

And here is where it gets in trouble:

if ($GET['auth'] == "login" && isset($POST['authUser']) && isset($POST['authPass']) && isset($POST['authProvider']))

There is, of course, a lot more code involved, but this is where the app bombs out and what it is pointing to when it does.

I'm still trying to absorb some of the other comments. I'm beginning to think this app was written expecting globals to be set on, and I'm in the process of trying to figure out what all I need to do to correct this.

[jcacy]

I thnk I may be getting warm. I found this in the manual:

Note: Please note when working with sessions that a record of a session is not created until a variable has been registered using the session_register() function or by adding a new key to the $_SESSION superglobal array. This holds true regardless of if a session has been started using the session_start() function.

This app has a session_start(), but no session_register, and I've got globals turned off.

Does this sound close?

[jcacy]

Nope. Read further. That isn't it.

BUT

I put an echo statement in the receiving page:

echo $_GET['auth'];

and when the page executes, it says login

$_GET['auth'] returns login, like it is supposed to, but for some reason the script:

if ($GET['auth'] == "login" && isset($POST['authUser']) && isset($POST['authPass']) && isset($POST['authProvider']))

gets parsed as having auth undefined.

I think it's Miller time . . . . . . . .

[jcacy]

Okeydokey. I did this:

I modified this string:

if ($GET['auth'] == "login" && isset($POST['authUser']) && isset($POST['authPass']) && isset($POST['authProvider']))

and inserted an isset, like this:

if (isset($GET['auth']) && $GET['auth'] == "login" && isset($POST['authUser']) && isset($POST['authPass']) && isset($_POST['authProvider']))

and now it works.

There are several more similar statements following that will need this same treatment for the app to work all the way through, but this seems to be what was needed.

But I'm not ashamed to say I don't get it. Why would checking to see if the variable is set make it go ahead and work?

Do any of the gurus have any idea what this does?

Thanks

[jimmybond]

set your error reporting to this in the script (if you have a configuration script then set it in there )

error_reporting (E_ALL ^ E_NOTICE);

or edit you php.ini to set it to not show notices (they are good for debugging but if you want a third party program to work get rid of notices)

[jcacy]

Thanks

I picked up a book this weenend: Programming PHP from O'Reilly. It's pretty authoritative, but then, the lead author is Rasmus Lerdorf. Go figure. <smile>

[jimmybond]

i had a look into this after i posted an i now do it with a function similar to this

my_get_function ($name_of_get_variable){
if (isset($GET['$name_of_get_variable'])) {
return $GET['$name_of_get_variable'];
}else{
return null;
}
}

this could possably be improved but it serves my needs and then i dont have to worry about turning off notices

i just keep it in a file where i keep all my standard functions and include it on all pages

[chinmayvarma]

Change PHP.ini file.

Find "display_errors" , line no: 268.

It will be = On.

Change it to Off.

Refresh the browser.

Hope it helps.

chinmay varma 😉