Hi Ray.
Thanks for getting back to me.
Does this mean that I can ignore the messages completely for now?
Ideally I'd like to do a proper job, so this doesn't come back to haunt me in a future version of PHP, but my view cart page has been heavily rearranged to fit the clients required format, so updating with the display manager would require a lot of manual adjusting afterwards. If I can just ignore the messages, though, the should do the trick for now.