if ($controller->has_curr()) { // request has a valid CSRF token // execute actions here } else { // request does not have a valid CSRF token // handle error here }This code would typically be included in a controller that processes form submissions or other types of requests. The `has_curr` function is part of a package/library that provides CSRF protection functionality. Popular libraries that provide CSRF protection include Symfony Security Component, Laravel CSRF Middleware, and OWASP CSRF Protector.