PHP Consumer Example/ Extension Arguments

[Paul Tanner]

Spent some time trying to find simple consumer examples in PHP.  The 
problem was that I was using the 1.2.1 PHP library download which did 
not include an examples directory.  That is now resolved with the 
1.2.2 download and the consumer example works fine.  Except:

To test Extension Arguments I added in try_auth.php

   $auth_request->addExtensionArg('sreg', 'optional', 'postcode); # 
just after the similar line for email

This had the effect of correctly passing the postcode from my OpenID 
through to finish_auth.php.  However , it caused the email address to 
no longer be passed.  Is this a defect or is there a problem with 
passing more than one extension argument?