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Date: Thu, 18 Dec 2025 06:37:16 +1300
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Subject: Re: [PHP-DEV] Re: Bug inside PHP CLI sessions
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From: weedpacket@varteg.nz (Morgan)

On 2025-12-18 06:12, Gregory Magarshak wrote:
> My apologies. I made a mistake in the minimal examples to reproduce:
> 
> 1. session_id($id); session_start(); echo session_id(); // empty!
> 
> 2. session_id($id); echo "b"; session_start(); echo session_id(); // FINE!!
> 
> 3. echo "a"; session_id($id); echo "b"; session_start(); echo 
> session_id(); // empty again!
> 
> Sincerely,
> Greg Magarshak
> <http://qbix.com/invest>
> 
> 

I tried your minimal reproductions in the CLI and got undefined variable 
warnings from the $id value. Putting in a literal session id value I get

1. session_id('session17'); session_start(); echo session_id();"

 > session17

2. session_id('session17'); echo 'b'; session_start(); echo session_id();

 > bSession cannot be started after headers have already been sent (sent 
from Command line code on line 1) in Command line code on line 1

3. echo 'a'; session_id('session17'); echo 'b'; session_start(); echo 
session_id();

 > aSession ID cannot be changed after headers have already been sent
 > bSession cannot be started after headers have already been sent



I get the same results using `php -r`, `php -a`, and putting those lines 
in files and running them.

What else is your framework doing that is being left out of this setup?