Description:
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First of all, thanks for this great extension.

While trying to develop an COM/ADO driver for SQL Server I've found three small bugs:

- The name parameter PDO::lastInsertId was causing an error when it was omitted (it's optional).

- Last version was not compiling in Windows (variable definition).

- In php_pdo_user_fetch_error_func, the description was being copied from the position 0 instead of 1.

Here's the patch: 
http://webmail.digbang.com/pdo_user.diff

Regards,
Mauro.