Arnoud is correct, I had same error and then I use htmlentities($tweet) and it works now, my OAuth application posts the tweets automatically and correctly.
On 24 mei, 17:22, Javier Solís <jso...@tssolutions.co.cr> wrote: > I when is sent a update status call with OAuth than include special > characters like óíú... Twitter raise a 401 error. > > I tried with diferent encoding tricks, and stop the error 401, but the > characters cannot display fine in twitter status. > > If you know a new version of OAuth withot this problems, please tell me. > > Thanks -- Twitter developer documentation and resources: https://dev.twitter.com/doc API updates via Twitter: https://twitter.com/twitterapi Issues/Enhancements Tracker: https://code.google.com/p/twitter-api/issues/list Change your membership to this group: https://groups.google.com/forum/#!forum/twitter-development-talk