Just make it accept a number and return true if it's valid. Nobody's going to ask for 1000 numbers, and if they want to DDOS they can do it anyway. And if for

Just make it accept a number and return true if it's valid. Nobody's going to ask for 1000 numbers, and if they want to DDOS they can do it anyway. And if for some reason you can't - please don't return your data in a proprietary format based on a clever hack. Just use gzip.