Configuration for Setting HttpOnly Flag

Overview

This guide will walk you through the steps to modify the options being passed to the setcookie function in your WooCommerce setup. A typical alteration might be altering the httponly option to true. Ensuring your cookies have the HttpOnly flag can help improve the security of your website by preventing client-side scripts from accessing the data.

Prerequisites

• WooCommerce installed and activated
• Basic knowledge of PHP and WordPress development
• Access to your website’s file system

Steps

1. Access the functions.php file:

• Navigate to your theme’s directory (usually found at wp-content/themes/your-theme-name).
• Open the functions.php file for editing.
• Modify the setcookie options array by doing the following:

Add the following code snippet to your functions.php file. This snippet hooks allows you to modify the options parameters being used in the setcookie function.

add_filter('mailchimp_cookie_data', function($data) {
    $data['options']['httponly'] = true;
    return $data;
});

1. Save and upload the file:

• Save the changes to the functions.php file.
• Upload the modified file back to your server if you are editing it locally.

1. Verify the changes:

• Clear your browser’s cache or open a private browsing session.
• Inspect the cookies set by your website to ensure the HttpOnly flag is present.

Additional Considerations

• Security: Setting the HttpOnly flag is a good security practice, but it should be part of a broader security strategy. Ensure your website also uses HTTPS and other security measures.
• Compatibility: Test the changes thoroughly to ensure they do not interfere with the functionality of your website or plugins.

Troubleshooting If you encounter issues after adding the HttpOnly flag:

• Check for typos: Ensure the code snippet is correctly added to your functions.php file.
• Error logs: Review your server’s error logs for any related messages.
• Plugin conflicts: Disable other plugins one by one to identify any potential conflicts.

References

• WordPress Support: HttpOnly Flag