What's wrong with using $_REQUEST[]?

Question

I\'ve seen a number of posts on here saying not to use the $_REQUEST variable. I usually don\'t, but sometimes it\'s convenient. What\'s wrong with it?

Answer 1

It's vague. You don't really know how the data got to you since it carries post, get, and cookie data. I don't necessarily think that is always a bad thing, unless you need to know or restrict the method of delivery.