# ingres_rollback

(PHP 4 >= 4.0.2, PHP 5 < 5.1.0, PECL ingres >= 1.0.0)

ingres_rollback — Roll back a transaction

### 说明

ingres_rollback ( resource `$link` ) : bool

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().

### 参数

`link`

  The connection link identifier

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 参见

- ingres_query() - Send an SQL query to Ingres
- ingres_commit() - Commit a transaction
- ingres_autocommit() - Switch autocommit on or off