How to pass Perl session variables to PHP?

Question

Perl

I'm integrating a PHP page into a site written in perl-cgi. On the main page of the site, the user logs in and the session variables include [user code]. My section, written in PHP using virtual include, loads a .cgi header, and the rest of the code is written in PHP. How to extract the value I need from pearl session variables in PHP?
Links in Google tell only about the reverse process

Answer 1

Set the env environment variable
In Perl it should be easy, in PHP it's getenv()

Answer 2

By default, sessions are stored in files, you can parse them in php