[RESOLVED] Multiple start_session() in includes

Earnan

I am having a problem with my includes.

I may have a single page include multiple includes, and these includes may be included in multiple pages (and not always together).

I want to use variables from the $_SESSION set. In order to do so, I have to start_session().

If I start_session() in multiple files that are included in the same page, I get errors.

Is there a way to detect if a session is already started with an If statement? Or something like start_once?

Thanks.

jatinder

The quickfix will be to suppress error reporting by adding '@' to the function name. Example:

@session_start()

Earnan

jatinder wrote:
The quickfix will be to suppress error reporting by adding '@' to the function name. Example:
@session_start()

Thanks. I read up some more about it, and it is just a "hey, you are about to do something silly" notification.

I think I have an alternative idea...I am going to create a seperate PHP file with just the session_start(); command in it, I will then include_once() that file whenever I want to use session variables.

I'll post if it works.

jatinder

The better approach would be to create a application wide include file "app-init.php"

<?php
ob_start();
session_start();
?>

Include this file at the top of every PHP file and then remove calls to session_start and ob_start form all other include files.

You can also use this file to initialize system wide variables or open database connections.

What I posted in my previous message was just that, a quickfix, not a solution.

thorpe

Or you could just do...

if (!isset(session_id()) {
  session_start();
]

but a nice init include always comes in handy.

blackhorse

I have multiple session_start(); but not see any errors. What is the set up difference?

My own page has a seesion_start(), but when I include a page from a 3rd party affiliate system, it has a session_start() too, but I didn't see errors.

Plus, so would it be a good practice, in the future, that always use

if (!isset(session_id()) {
session_start();
}

I could use mass replace to replace on the session_start() with

if (!isset(session_id()) {
session_start();
}

in my own codes to avoid possible errors.

Thanks!

jatinder

Calling the session_start multiple times will result in an error of level E_NOTICE. Whether you see the notices or not will depend on th error reporting settings in your php.ini file. You can also control the error reporting using the function err_reporting.

Earnan

jatinder wrote:
The better approach would be to create a application wide include file "app-init.php"
<?php
ob_start();
session_start();
?>
Include this file at the top of every PHP file and then remove calls to session_start and ob_start form all other include files.

You can also use this file to initialize system wide variables or open database connections.

What I posted in my previous message was just that, a quickfix, not a solution.

I would want to do this as an include_once() correct?
I love the idea of setting up numerous connections in this file, great idea.

blackhorse

thorpe wrote:
Or you could just do...
if (!isset(session_id()) {
  session_start();
]
but a nice init include always comes in handy.

if (!isset(session_id()) will not work. see the notes from php manual.

jpjounier at hotmail dot com
23-Jun-2005 07:28
About the note from Cybertinus :

The following test doesn't work, the code following is always executed :

if(!session_id())
{
// Always executed even if there's already an opened session
}

session_id() returns an empty string if there is no current session, so to test if a session already exists, it's better to write this :
if(session_id() == "")
{
start_session();
}
else
{
// Anything you want
}

MY QUESTION:

This note from php manual. start_session(); is that an error for session_start();

Or can I simply use

if (!isset ($_SESSION)) session_start();
Thanks!