ingres_rollback

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0)

ingres_rollback — Roll back a transaction

bool ingres_rollback ([ resource $link ] )

ingres_rollback() rolls back the currently open transaction, actually 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().

link: The connection link identifier. If not specified, the last opened link is used.

如果成功则返回 TRUE，失败则返回 FALSE。