It is possible to get the session from another page to continue using it on my page?

I'm a newbie programming in php and I want to ask for your help. It is possible to get the session from another page to continue using it on my page. For example, if I log in to a page and there is a button that redirects the user to my page, it is possible to obtain the login data to keep the session active on my page. This is necessary since I need the user's data to know if the user is an operator or a supervisor. Thanks in advance.