native pgsql functions and pear error

Hi, For one of my projects I'm using postgresql. This code does not need to use a DB abstraction layer as I will not port it to use other databases. Furthermore it makes heavy use of postgresql specific things such as triggers, procedures (in plpgsql) views etc. So I can just use the native functions you'll say. That is true but I like using PEAR Error, so I was wondering how to go about using the native PG functions in conjuction with PEAR Error. I guess I will need to write a small wrapper class that can throw a PEAR Error after checking the result of query. It can use pgsql_result_error() as the errormessage, but I don't know how to find the error code. The PHP manual doesn't mention anything about that. And without proper error codes PEAR Error is not as useful. Any ideas? Jeroen