result_id is a valid
result id returned by ifx_query() or
ifx_prepare().
Returns a pseudo-row (associative array) with
sqlca.sqlerrd[0] ... sqlca.sqlerrd[5] after the query
associated with
result_id.
For inserts, updates and deletes the values returned are
those as set by the server after executing the query. This
gives access to the number of affected rows and the serial
insert value. For SELECTs the values are those saved after
the PREPARE statement. This gives access to the *estimated*
number of affected rows. The use of this function saves the
overhead of executing a "select dbinfo('sqlca.sqlerrdx')"
query, as it retrieves the values that were saved by the ifx
driver at the appropriate moment.