ingres_rollback

(PHP 4 >= 4.0.2, PHP 5 < 5.1.0, 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 cancelling all changes made to the database during the transaction.

This closes the transaction. A new transaction can be opened by sending a query with ingres_query().

成功时返回 TRUE，或者在失败时返回 FALSE。