int sqlsrv_rows_affected ( resource $stmt )
Returns the number of rows modified by the last INSERT, UPDATE, or DELETE query executed. For information about the number of rows returned by a SELECT query, see sqlsrv_num_rows().
Returns the number of rows affected by the last INSERT, UPDATE, or DELETE query. If no rows were affected, 0 is returned. If the number of affected rows cannot be determined, -1 is returned. If an error occured, FALSE is returned.