function isAuthorized($user_role, $access_level) { if ($user_role >= $access_level) { return true; } else { return false; } }In this example, the function takes two parameters: `$user_role` and `$access_level`. The function compares the `$user_role` with the `$access_level` and returns true if the user is authorized, otherwise, it returns false. The package library that contains the `isAuthorized` function could be a custom library or any popular PHP framework such as Laravel, CodeIgniter, CakePHP, etc.