Question

Listed below are the values that are saved in the $_SESSION array when a user is authenticated: $loggedin = $_SESSION['loggedin']; $accountid = $_SESSION['accountid']; $userDisplay = $_SESSION['userDisplay']; $username = $_SESSION['username']; $email = $_SESSION['email'];

Briefly explain the purpose of each of the five variables ($loggedin, $accountid, $userDisplay, $username, $email) and give an example of where each variable is used

Answer 1

($loggedin, $accountid, $userDisplay, $username, $email)

These values are retrived using the session variable, which means, these values are available across all the pages on the website wherever the session is maintained.
Hence, In order to show a user profile picture along with its name and email, $userDisplay, $username, $email is kept. $loggedIn is a boolean, which describes whether the user is currently loggedIn or not. So if a particular section is only meant for registered usees, then $loggedIn can be used to provide the access to that section.

Similarly, $accountid can be a attribute which should be sent to server on each request, so that server gets to know which user is making a particular request and if the request is a valid request.

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