problem with sessions in iframe

Hi Friends

I tried to show my website on construct iframe window but I found it doesn't work well on those pages which I use sessions ( using php on server side ).

as example on my php file I have this code to set and track username on other pages: $_SESSION['user'] = $row['user'];

It works well on normal browswers but in construct iframe it seems it doesn't set session or it can't find user in other pages. maybe I should set some rules to allow iframe to use sessions? any idea why it doesn't work?

Thanks in advanced

I just found a solution on server side, I add this code before session_start on website php code and now everything works well on iframe:

ini_set('session.cookie_samesite', 'None');

session_set_cookie_params(['samesite' => 'None']);

session_start();