destroying certain session variables

[peanutgallery83]

On a page within my program I need to delete a number of variables, but I need some of the session variables to remain. I''m trying to use the following code to do this, but it is only allowing the $username1 and $id1 variables to remain (in other words, it is deleting everything except the username1 and id1 session variable).

What am I doing wrong? I've tried looking at php.net and its explanations of SESSION destroy and what-not, but I didn't understand what it meant.

Please help!

Landis

foreach ($_SESSION as $key => $value) 
{ 
    if ($key != 'username1' && $key != 'id1' && $key != 'referee_name1' && $key != 'f_name1' && $key != 'l_name1' && $key != 'state1' && $key != 'region1' && $key != 'assignor1_2' && $key != 'assignor2_2' && $key != 'assignor3_2' && $key != 'assignor4_2' && $key != 'assignor5_2' ) {unset($_SESSION[$key]);} 
}

[a4arpan]

I am not sure this will help you but have a look

If a globalized variable is unset() inside of a function, only the local variable is destroyed. The variable in the calling environment will retain the same value as before unset() was called.

If you would like to unset() a global variable inside of a function, you can use the $GLOBALS array to do so:

function foo() {
unset($GLOBALS['bar']);
}

$bar = "something";
foo();

[peanutgallery83]

Could you give me an example of that with the variables I am using? I'm not sure I understand. Does that mean I just need to enter in each of my variables (username1, id1, referee_name1, .....) where the "bar" variable is in that function?

[hmemnon]

Ops, my bad