Changing Session Variable Values

[Anon]

I haven't been working with PHP very long, and now I am starting to get into session variables. Two problems:

1. I am having trouble with changing the value of session variables. IE: a user enters their name and password, submits, the session is started, the session variable "username" is registered, the variable is checked against a database and is found to not exist, the user is redirected back to the page with the username input filled with the invalid username. The user is then prompted to re-enter thier username. Once submitted, I am having trouble redefining this variable, my script is looking at the old, invalid username and not the updated.

2. I am having trouble getting session variables to pass from page to page via header ( "location: ..." ).

Any help would be greatly appreciated. Thanks!

[trooper]

Two things

Once the user has failed the login you'll need to destroy the value of that session variable session. That way your values will be erased. This is done using session_unregister( var name)

Secondly you'll need to pass the values of the session variables to normal names. This makes it easier to remember.

SQL statement grabbing all my data

$first_name = $row["first_name"];

$Session["firstname"] = $first_name;

e.g $S_fname = $Session["firstname"];

now create a page that is included in all the other pages that you want the session data to be used in.

so if i have a all my session data in a file called session.php then so long as that page is included then i can use $S_fname.

hope this helps
GM