a problem about logging in and out

[4ior]

Hi,
i have problem that when i login it redirects me to my main page and there i have a function islogged() if the function returns true then the member is logged in if it returns false then the member is not logged in.
The problem is that when i return to the page after being redirected it doesn't log me in automaticly. i have to refresh the page to log in.

Parts of the code:
functions.php

function isLogged() {
return (defined('USERID'));
}

login.php

header("Location: index.php");

index.php

if(!isLogged()) { echo "not logged in"; }
else {
echo "logged in";
}

it echos not logged in.
and then when i refresh the page it echoes logged in.

thank you

[hakre]

hi 4ior,

welcome to Webmasterworld. It looks like you're facing a problem with caching here: your browser does not request the current page until you refresh it manually.

things to do:

add a random number as a query string to your main-page to generate a new address of that page for each redirection. that way you browser has no cached copy of that page available:

header("Location: urlofmainpage[b]?".uniqid(rand(), true)."=".uniqid(rand(), true)[/b]);

checkout your browsers preferences and tell it not to cache pages (always request the latest version).

send additional headers to the client on that page to tell it not to cache the page: [php.net...] (take a look especially at the users comments there, this problem does occur to many people)

hope this helps,
hakre

[4ior]

thanks for the fast reply.

I believe that that is not the problem.
in functions.php
the function islogged()
is before session_start();
(also the function that is defining userid is before session_start();.)

I didn't quite understand what you said.
Thank you.

[hakre]

in php it is not important where the function is written down, it is important when the function is called.

is the function called before session_start(); or afterwards?

where is the contant userid defined?

which php version are you using?

[4ior]

ok,
the function is called after session_start();
the constant userid is defined in this function:
setGlobalVars();

it goes like this:
function isLogged() {
return (defined('USERID'));
}
session_start();
setGlobalVars();

and any time that i want to log in i do:

if(!isLogged()){
echo "error";
}
else{
echo "content";
}

[hakre]

do you know how to check your php version to post it here?

additionally that does not seem to be a problem of the order, it looks like setGlobalVars() does not do what's intended or you face the problem with cached pages.