How to retrieve user information after logging in with PHP?

After successfully logging in, you can obtain user information through the following methods:

1. Retrieve user information from a session: After a user successfully logs in, store their information in the session and access it using the $_SESSION global variable. For example, if the user information is saved in $_SESSION[‘user’], you can retrieve the user’s name by using $_SESSION[‘user’][‘name’].
2. Retrieve user information from the database: Store user information in the database, and after successful login, look up the user’s detailed information by their unique identifier (such as user ID).
3. Utilizing user authentication library: Utilizing existing user authentication libraries, such as Laravel’s Auth library, you can retrieve information about the currently logged-in user by using Auth::user().

It is important to note that before obtaining user information, you need to ensure that the user has successfully logged in and been authenticated.