how to authenticate in a symfony project when i login from another one

Question

i have 2 symfony projects project 1 and project 2 and want to authenticate in both using the login form in project 1. both projects have the same database my projects hostnames are for example project1.test and project2.test they are not in the same domain

i tried sharing session in the database and using PDOsession handler

session:
handler_id: Symfony\\Component\\HttpFoundation\\Session\\Storage\\Handler\\PdoSessionHandler
save_path: '%kernel.project_dir%/var/sessions'
cookie_secure: auto
cookie_samesite: lax

but i could not find a way to get that session in the second project i'm not sure how i can do that

Answer 1

it was possible to use subdomaines so i ended up sharing session in mysql for both projects and configure the same cookie_domaine and trusted domaines on both projects in framwork.yaml

session:
    handler_id: Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler
    cookie_secure: auto
    name: shared_session
    cookie_domain: '.example.com'
    cookie_lifetime: 0 
    gc_maxlifetime: 86400 # Set the desired TTL in seconds
    gc_probability: 1 
trusted_hosts: ['product.example.com', 'cart.example.com']

setting cookie_lifetime to 0 allows you to use gc_maxlifetime instead i hope this is helpful to someone <3