encryption

[cqball2000]

What's the best way to encrypt the appended data on my http string?

For example, I've got http:www.mydomain.com/file.php?var1=foo&var2=var

How would I encrypt var1=foo&var2=var so and decrypt it on the receiving page?

Thanks!

[kparker]

To what end?

But if you're determined it's necessary, you can certainly install mcrypt and encrypt away. The simplest way is to just encrypt (and then urlencode) the contents of the strings; that way php will still parse the data and put it into variables automatically. But if you need to obscure even the variable names, then make everything into one long string (e.g. var1=foo&var2=var) and then encrypt and urlencode that, and then you can say:

$url = "http://www.mydomain.com/file.php?v=$my_hidden_vars";

and of course you have to unpack it on the receiving side as well.