Session Vars in a Function??

[viper21634]

I was trying to read and set some session vars from inside a function. Well I just cant get it to work. Is it even possible, I would think that it would be, but who knows. I got around it but I was just wondering.

function setvars(var1)
{
     session_register("session_var");
     $session_var = $var1 + 5;
}

setvars(3);
echo $session_var;

well it tells me that session_var is not defined. I dont know, just wondering.

[herve]

Hi,

function setvars ($var1)

instead of :

function setvars(var1)

may be ?

but also, I think you should read a good tutorial about how
to deal with sessions variables, like here :

http://www.phpbuilder.com/columns/mattias20000312.php3

there's good examples on "how to ... ?"

Hervé.

[viper21634]

yeah, that is the way it is in my script, I just didnt type it like that. i read the liitle how to, is there no more than 2 pages?? I have gone over my php books, and the php web site, I am doing everything correctly, in fact I am running almost the exact same code out of the function, and it works just fine, it just wont set the vars from in the function, maybe this is the way that they wrote it 😕

[herve]

Well, what's wrong with your code is that
$session_var seems to be defined in the function, so by default,
it's local (scope) to that function. It is unknown
outside of it, with or without the session_register() call.

"session_register()" is different from "global $session_var;"
for instance.

It's difficult to tell where to put things and in what order
since it depend of the rest of the code.

PS:
here you have a bigger (more detailed) tutorial :

  [url]http://www.zend.com/zend/tut/session.php[/url]

Hervé.

[viper21634]

yeah, that is what I figured, it is just that you would think that it would let you define a session var that can get out of the function. I will have to call the php guys and tell them to change it 😉

[herve]

Put down your pencil 😉
just add :

global $session_var;

inside the function and I think it should work (?)

[viper21634]

yeah, that did the trick, not only global, but session too, well I wont have to call them after all 😉 thanks Herve