Question

How to easy encode and “compress” URL/e-mail adress to string in PHP?

String should be:

1. difficult to decode by user
2. as short as possible (compressed)
3. similar URLs should be different
   after encoding
4. not in database
5. easy to decode/uncompress by PHP script

---

ex. input -> output,
stackoverflow.com/1/ -> “n3uu399”,
stackoverflow.com/2/ -> “ojfiejfe8”

Answer 1

Not very short but you could zip it with a password and encode it using base64. Note that zip is not too safe when it comes to passwords, but should be ok if your encrypted value is intended to have a short lifetime.

Note that whatever you do, you won’t be able to generate a somewhat safe encoding unless you agree to store some unaccessible information locally. This means, whatever you do, take it as given that anyone can access the pseudo-encrypted data with enough time, be it by reverse engineering your algorithm, brute-forcing your passwords or whatever else is necessary.