Google OAuth2 Authorizing OAuth token error: redirect_uri_mismatch

Question

I am Creating and Authorizing an OAuth Token according to this webpage: https://code.google.com/p/google-mail-oauth2-tools/wiki/OAuth2DotPyRunThrough

But I got this

Answer 1

Lost 4 or 5 hours with this... use 'postmessage' as parameter value, not the real Redirect Uri...

$client->setRedirectUri('postmessage');