pg_last_oid Returns the last object's oid intpg_last_oid resourceresult pg_last_oid is used to retrieve the oid assigned to an inserted tuple (record) if the result resource is used from the last command sent via pg_query and was an SQL INSERT. Returns a positive integer if there was a valid oid. It returns &false; if an error occurs or the last command sent via pg_query was not an INSERT or INSERT is failed. OID field became an optional field from PostgreSQL 7.2. When OID field is not defined in a table, programmer must use pg_result_status to check if record is is inserted successfully or not. This function used to be called pg_getlastoid(). See also pg_query and pg_result_status