微登录php玩具$ username在其他页面

Question

i use phpoys micro login system to login and register users to my website but i cant figure out how i can display the $username in pages....

micro login script

I integrated this scrip in my website and it works great, but when i want to call $username, like in the login.php file for example in index.php the $username doesnt exist?

when i place echo $_SESSION['userName'] ; i get the username, bu if it was $username i could integrate his in other functions of my website. Is this solvable to read $username not only on he login.php script?

on he login page $username is called like this

if (isset($_POST['submitBtn'])){
    // Get user input
    $username = isset($_POST['username']) ? $_POST['username'] : '';
    $password = isset($_POST['password']) ? $_POST['password'] : '';
}

Answer 1

Once you've logged in you'll be able to access the username from the $_SESSION variable.

To check whether the $_SESSION data has been set, use the function isset.

if (isset($_SESSION['userName'])) {
   echo $_SESSION['userName'];
}

This will only display the username if you are logged in. To use the session data across onto other pages, be sure to place session_start(); up the top.