My application (obviously) uses a unique ID to distinguish records. This UID is passed in URLs (e.g.
./examplepage.php?UID=$example_int), among other things.
While I obviously have server-side validation in place to make sure clients don't access other clients' data, is there a two-way encryption method I can use in PHP to only pass encrypted UIDs (e.g.
./examplepage.php?EUID=$encrypted_int), to further reduce the chance of anyone thinking "hey, what happens if I increment this integer?"