Update Session Variable in PHP

To update a session variable in PHP, you simply assign a new value to it, just like you would with any other variable. Here's an example:

Assuming you have already started the session with session_start():

<?php
// Start the session
session_start();

// Set initial values
$_SESSION['user_id'] = 123;
$_SESSION['username'] = 'john_doe';

// Update the 'username' session variable
$_SESSION['username'] = 'updated_john_doe';

// Rest of your PHP code
?>

• In this example, the $_SESSION['username'] variable is initially set to 'john_doe'. Later in the script, it is updated to 'updated_john_doe'.
• Remember that the session must be started with session_start() on every page where you want to work with session variables. If the session has not been started, you won't be able to access or update session variables.
• Additionally, it's important to note that session variables are specific to the user's session and are stored on the server. Any changes made to session variables will persist for the duration of the session or until the user logs out or the session is destroyed.

Thank you.