if (!userHasAccess('admin')) { echo 'Sorry, you do not have permission to access this page.'; die(); }
if ($_SESSION['user_role'] !== 'editor') { header('HTTP/1.0 403 Forbidden'); echo 'You do not have the necessary permission to access this resource.'; die(); }In this example, the PHP script checks the user_role value stored in the session variables. If the user is not an "editor", they are forbidden access to the requested resource, and a permissionFailure message is displayed. Package/library: This code example does not specifically use any external package or library. In general, the Security permissionFailure message is an important security feature that helps prevent unauthorized access to resources. It is often used in combination with other security measures, such as role-based access control and user authentication. There are various PHP security libraries available that can help developers implement these measures more easily and effectively, such as the PHP Security Advisories package or the PHP ACL package.