session and functions

nileshd

Does anyone know if we can register a session variable inside a function?

e.g

<?

session_start();


function save()
{
    $x=4;
    session_register("x");
}

?>

This does not work for me.. anybody knows how to use sessions within functions?

Thanks

planetsim

<?

session_start();


function save()
{
    $x=4;
    session_register("x");
}

?>

Try this

<?


session_start();

function save()
{

$x=4;
session_register("x");
return $_SESSION['x'] = $x;
}

?>

nileshd

Thanks... that worked !!

enkie

Hi, I happened to see these posts, and think it's important to look at these cautions (simply copied from the manual).

These are especially crucial since in current versions of PHP the register_globals are off by default (as they should be)...

Hope that helps - Henk

----- snip ------

Caution

If you want your script to work regardless of register_globals, you need to use the $SESSION array. All $SESSION entries are automatically registered. If your script uses session_register(), it will not work in environments where register_globals is disabled.

Caution

This registers a global variable. If you want to register a session variable from within a function, you need to make sure to make it global using the global keyword or the $GLOBALS[] array, or use the special session arrays as noted below.

Caution

If you are using $_SESSION (or $HTTP_SESSION_VARS), do not use session_register(), session_is_registered() and session_unregister().

planetsim

Valid point. Yet i have tested it in the situation they say it shouldnt work or suggest it doesnt work and it still does. It something that confuses me with PHP. They say it wont work in some php set up when it does.

Unless i missed something. If i did it could probably put too much stress on the webserver.

enkie

Actually, looking at the code from planetsim, in his code it seems the session_register is totally bypassed. Try leaving it out, it should work! I guess the 'return' is also not necessary.

Maybe the manual's right after all.

Good luck, Henk