passing variables with periods in url

[Anon]

I would like to pass variables in the URL that have periods in them. urlencode/rawurlencode does not turn this into the hex value for a period. Will I experience any problem with this?

what i want to do this for is so that i can send the name of the file the user has requested to my login form so that they can be redirected back after a session is established. is there a better way of doing this?

thanks!

[Anon]

Y'might be able to get away with having the '.' there, otherwise, str_replace('.','%2E',urlencode($var));