[RESOLVED] Session Start

closer2u2

On about 4 pages I have a session_start() function

This gave me the error / notice :

 A session had already been started - ignoring session_start()

So I changed it to

if (!isset($_SESSION['UID'])) { session_start(); }

But I still get the notice, as it will start a session with every user that is not logged in.

I'm stuck on how to avoid this error / notice. Suggestions would be welcomed

If I look into the cookies set, then I do see a PHPSESSID cookie, my guess is to work with that, but all my tryouts failed.

Name	PHPSESSID
Value	kcap0jo4tfe7r7q0pboo1qp3p3
Host	        www.mysite.com
Path	/
Secure	No
Expires	At End Of Session

Krik

If you close all the browser windows and tabs that are running that site and then reenter does the first page give that error?

And either way maybe some code would help us see the bigger picture.

As for a quick solution. just make sure your session_start is the very first line of code on every page.

<?php
session_start();

//all other code and HTML here

?>

And if it is part of a page that is included on those 4 pages the include must be before all other code on those pages.

<?php
include('sessionstartpage.php')

//all other code and HTML here

?>

It should even be before the HTML !DOCTYPE header.

closer2u2

Hi,

session_start(); is on the forst line of all 4 pages

when closing browser and re-opening it, I do not get an error on page 1, but I do get it if I navigate to either of the 3 others...

formlesstree4

This is what I use to check for sessions, and it hasn't errored for me at all:

ini_set("session.gc_maxlifetime", "18000"); // 5 hours 0_o
session_start();
if(!session_is_registered(mysessionname)){
header("location:loginform.php");
}

Of course, it's only for checking if the session is registered, and if it isn't, it will redirect to the login page. Try setting the expiration of sessions (like I did).

Kudose

I think a better solution to check if a session has been started would be

if(!strlen(session_id())) session_start();

if(empty(session_id())) session_start();

closer2u2

if(!strlen(session_id())) session_start();

did the trick

but

if(empty(session_id())) session_start();

gives me this error

PHP Fatal error: Can't use function return value in write context

Kudose

closer2u2;10881622 wrote:

if(empty(session_id())) session_start();

gives me this error

PHP Fatal error: Can't use function return value in write context

That's interesting.