(PHP 5)
ibase_rollback — Roll back a transaction
$link_or_trans_identifier = NULL
] )Rolls back a transaction.
link_or_trans_identifier
If called without an argument, this function rolls back the default transaction of the default link. If the argument is a connection identifier, the default transaction of the corresponding connection will be rolled back. If the argument is a transaction identifier, the corresponding transaction will be rolled back.
成功时返回 TRUE， 或者在失败时返回 FALSE。