Empty a session?

[Kristian_C]

Hey, if i use this :if (empty($_SESSION['username'])){echo "<script LANGUAGE='JavaScript'>window.location='index.php';</script>";and add a submit form. will that logout all users that are online on page? ->Kristian_C

[MrAdam]

you should use...

session_destroy()

that will completely destroy the session and effectively log out your users.having...

<script LANGUAGE="JavaScript">window.location=index.php;</script>

...will automatically redirect the user, no matter wether there's a submit button or not. if you're wanting to only redirect your users when they click a button, you need to create a function, and run that function when the user clicks the button. if you are just wanting to automatically redirect a user, i'd use PHP:

Header("Location: index.php");

most likely more reliable than javascript.

[Kristian_C]

thanks :)but hmm.. whould :

<?if($_POST['out']){session_destroy(username)echo"<script LANGUAGE='JavaScript'>window.location=index.php;</script>";?>

that work? or must i do something else to select the username from somewhere?its a admin fuction so if i want to close down the site and need all users to logout...- Kris

[MrAdam]

ohh. session_destroy() has no parameters, using it will only remove YOUR session.to remove everybodies sessions .. you could create a piece of code within your script that reads a variable from either a config file or a database, for example:

<?phpsession_start();// read from file or databaseif ($log_users_out==true) {   session_destroy();}// rest of script?>

that MAY work, i'm not sure. I've never tried anything like it.

[Kristian_C]

Thanks mate, will try it when im done with the rest ->Kristian_C

[justsomeguy]

Do a search in the PHP forum for custom session handlers. I posted some code that will let you store sessions in a database instead of the default location. If you use that, you can just delete everything in the database to log everyone out.