What I want to be able to do is a way to make postid not distinguishable to a human so that users can not manipulate that number.
So what I would like it to be able to do is turn 21 into something x%sdoij (random gibberish), and then be able to decrypt that so that the next page knows that x%sdoij is equal to 21.
Sorry if this is confusing I can't think of a better way to explain this. I thought about using md5 but I'm not comparing it to anything I'm just trying to pass the variable in the url.
Any help would be greatly appreciated thanks