What are some best practices for updating session variables in PHP without having to restart the session?

When updating session variables in PHP, the session must be started before any changes can be made. However, if you try to update session variables after the session has already started, you may encounter errors or unexpected behavior. To avoid this, you can use the session_write_close() function to close the session after updating the variables, allowing you to make changes without restarting the session. 

<?php
session_start();

// Update session variables
$_SESSION['username'] = 'new_username';
$_SESSION['email'] = 'new_email@example.com';

// Close the session to allow changes without restarting
session_write_close();
?>

Keywords

session variables PHP session_start session_regenerate_id session_write_close

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