ftp_put()'ing a string ...

hi everyone, I was wondering if anyone knew how (if possible) I could take a string and ftp_put()/ftp_fput() that string directly onto the remote server as a file (without first saving the string to disk temporarily locally) I imagine that there is a way to create a stream that refers to the string in question but I can't get my head round the streams functionality... Obviously saving the string temporarily to disk locally is an easy option but I was kind of using the situation I have now to try and do something a little fancy and learn something about streams. anyone with idea/pointers? TIA, Jochem.