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Geek Culture / PHP Sessions

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Neofish
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Posted: 8th Oct 2004 01:39 Edited at: 8th Oct 2004 01:43
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Ok, I have decided to create this thread because it is easier than talking to people on MSN.

On my forum (see sig) I have written a login page thing that returns the user id of the username and password entered. It attempts to register the user id to the session. Anywho, it losses (if it was ever registered ) the thing that was set when I redirect it.

Can anyone give me any tips how to solve this etc...?

EDIT: I can give more detail if needed

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David T
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Posted: 8th Oct 2004 01:41
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Current code?

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Neofish
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Posted: 8th Oct 2004 01:43
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In the source box:

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David T
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Posted: 8th Oct 2004 01:58 Edited at: 8th Oct 2004 01:59
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First thing I notice is that you set pass as id of 2 to the index.php, don't know if that's intentional.

Secondly there's nothing to do with sessions there

Also you go the long way round - you select all users, then perform a where clause on them in PHP

Here's my php login code, complete with session aswell:



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Neofish
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Posted: 8th Oct 2004 02:05
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Quote: " First thing I notice is that you set pass as id of 2 to the index.php, don't know if that's intentional."

yes, my forum pages are viewable when the id is equal to 0002 and all the others are pages, 0001 is the news page for example.

I just realised the session_register is on my index...the code of the register is the source box

and as for your code I am looking into at the moment...

Thanks

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David T
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Posted: 8th Oct 2004 02:27
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You're trying to register array keys. Try registering plain variables, like my code.

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Neofish
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Posted: 8th Oct 2004 02:34
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still doesnt seem to work + i noticed something wrong with my code, (not the code i gave you) but it didnt make a difference

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Neofish
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Posted: 8th Oct 2004 02:46 Edited at: 8th Oct 2004 02:48
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my new code:


which has parts that you have got in your code (David T)

btw in your code you have loggedin=y if it works and failed=yes if it fails, shouldn't you have loggedin=n?

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the_winch
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Posted: 8th Oct 2004 03:23 Edited at: 8th Oct 2004 03:27
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Why the foreach loop? there should only be one user with the username you are looking for.

Also what happens when the user gives an invalid username, the query won't return anything so what happens with the foreach loop then?

Shrink dbpro exes with upx
can i scream?
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Neofish
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Posted: 8th Oct 2004 03:28
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ive changed the code so that wont happen

+ the query returns an array or something, and the foreach takes each row

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Richard Davey
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Posted: 8th Oct 2004 03:29
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The foreach loop in your latest post is redundant

If you optimise your SQL statement a little, you can avoid a load of PHP code:

$sql = "SELECT COUNT(*) AS hits FROM users WHERE user_name = '$username' AND password = '$password'";

Now do a simple:

if (mysql_result($result, 0, 'hits') > 0)
{
// user exists and password was correct
}

I hasten to add this isn't the most friendly way to do it (because you can never tell the user that it was their password that was wrong, because it might have been that their username didn't exist) - but it is quicker. If you have decent indexes on your users table MySQL can do a count() like greased lightening.

Cheers,

Rich

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David T
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Posted: 8th Oct 2004 04:42
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Quote: "btw in your code you have loggedin=y if it works and failed=yes if it fails, shouldn't you have loggedin=n? "


They're just flags for me to show the correct message (ie "You've been logged in" and "Please try again"). They have nothing to do with the script.

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Neofish
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Posted: 8th Oct 2004 05:07
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yeah i have them too, but you must have two $_GET's where you only need one

on the sql front, the way i query SQL (and David T does) is different so teh foreach is the only way (i know) to turn the results that EZ_SQL gives into usable thingy, with things that arent for posts etc i try to minimise it...

anywho...here is my current code, it does recognise the user and sends them to the correct place:


Thanks
N30F15H

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David T
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Posted: 8th Oct 2004 05:28 Edited at: 8th Oct 2004 05:28
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yeah i have them too, but you must have two $_GET's where you only need one

It's not that hard... I just do this





As for your code.. this is how I would do it:

- Query for users who have the same username nad pass hash
- Get the first result out of ezsql and into $user.
- If there is a $user, then log un in as him else don't log us in.

No need for a foreach


PS - to count an array, try count()

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Neofish
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Posted: 8th Oct 2004 05:33
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Quote: "
"


yes you need $_GET to get it from the URL:

and you will need to GETs as you had two variables

to do that i have a variable called m and echo stuff depending on it...

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David T
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Posted: 8th Oct 2004 06:06
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Quote: "yes you need $_GET to get it from the URL:"


No you don't.

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Neofish
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Posted: 8th Oct 2004 06:07 Edited at: 8th Oct 2004 06:09
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dont you, oh well, my things never work without it (*tries*)

EDIT: you appear to be right but i usually have longer var names in the code and short ones in the URL so i use GET to change it

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Rob K
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Posted: 8th Oct 2004 06:49
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Quote: "(because you can never tell the user that it was their password that was wrong, because it might have been that their username didn't exist)"


I would always present the same error message whether the username was not found or whether the password was wrong. If someone is trying to illegitimately gain access to a site they have half the information if they know the username.


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Bob 3456
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Posted: 8th Oct 2004 07:10
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if you cant get it to work download phpbb (phpbb.com) and look at there code, i know it works thats what i did.
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Neofish
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Posted: 8th Oct 2004 07:11
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I looked at the code and it confused me

BTW I have phpBB on my hard-drive (not installed)

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