The SitePoint PHP blog has a tutorial posted looking to help you with managing your application's users via the Symfony2 FOSUserBundle. This bundle provides much of the basic user functionality (creation, login, etc) is a easy-to-drop-in package for your Symfony 2 application.
Symfony has a very powerful authentication and authorization system, which can cater to a lot of our needs out of the box. FOSUserBundle is a library built on top of Symfony’s security system, which provides functionality such as registration, login, password resets, etc. It has built in support for MongoDB, as well as ORMs such as Doctrine, Propel, etc.
The tutorial walks you through the setup of a new Symfony 2 application (living on a Homestead instance) and grabbing the FOSUserBundle code via Composer and pulling into the project. They help you configure the application's security via the
security.yml file and create the base user class and matching database table. From there they talk about customizing the templates that come as defaults with the bundle (Twig) and how to handle the email verification of new accounts as well as user logins/forgot password features. The tutorial ends with an example template showing the user's profile information including username, email address and and "edit" link.