How can the user ensure that the content of the variable '$impress' is displayed only for logged-in users?

To ensure that the content of the variable '$impress' is displayed only for logged-in users, you can check if the user is logged in before displaying the content. This can be done by verifying the user's authentication status, such as checking if a session variable is set or if a user is logged in through a database query. If the user is not logged in, you can redirect them to a login page or display a message prompting them to log in. 

<?php
session_start();

// Check if user is logged in
if(isset($_SESSION['user_id'])) {
    // Content to display for logged-in users
    echo $impress;
} else {
    // Redirect to login page or display message
    header("Location: login.php");
    exit();
}
?>

Keywords

PHP variable authentication session conditional statement

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