(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres:1.0-1.4.3)
ingres_rollback — Roll back a transaction.
ingres_rollback() rolls back the currently open transaction, actualy canceling all changes made to the database during the transaction.
This closes the transaction. A new one can be open by sending a query with ingres_query().
See also ingres_query(), ingres_commit() and ingres_autocommit().