public function check_response() {
		if ( ! empty( $_POST ) && $this->validate_ipn() ) { // WPCS: CSRF ok.
			$posted = wp_unslash( $_POST ); // WPCS: CSRF ok, input var ok.

			// phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
			do_action( 'valid-paypal-standard-ipn-request', $posted );
			exit;
		}

		wp_die( 'PayPal IPN Request Failure', 'PayPal IPN', array( 'response' => 500 ) );
	}