[Postgres-xc-general] php pdo driver?

I've been trying to get the php pdo driver for postgres (php extension
pdo_pgsql.so) to work with postgres-xc today, so far with no luck.  It
seems to give me a valid connection, but when I try to use
$conn->query($sql) or $stmt = $conn->prepare(..)  .. $stmt->execute(), no
exceptions are thrown, even for obviously incorrect sql, and no results are
fetchable even for trivial sql.  From the terminal, psql is working fine, I
can connect and run sql statements and so on, so it seems like the cluster
is operating and so forth.

Is pdo_pgsql.so working for you guys?