Session error

Anon

When I write these two lines:

session_start();
session_register("$username");

The error message:

Warning: Cannot send session cookie - headers already sent

Anon

Use session_register("username") without $ sign. When u need to access that session variable vvalue, than use $ sign with variable name like $username. :-)

Anon

I use $_SESSION[username] to register a variable to that session. It work within the same page. But when i redirect to another page, all my session variable is empty. How can I solve this problem?

Anon

A: It's session_register('username');

B: It's safer (and faster) to use $_SESSION['username'] instead of session_register('username') and $username

C: You must not send any content at all out to the browser before session_start() is called. No HTML, no blank lines before the first <?php, nothing. You can probably send headers, but no content.

Anon

May I know how to destroy the session?

Assume I have this in file1.php
$_SESSION[username];

After login button is clicked, it goes to file2.php. So in the file2.php, how can I detroy it?

Thank you.