oci_rollback()
(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
回滚未提交的事务
说明
oci_rollback(resource $connection): bool
oci_rollback()回滚 Oracle 连接$connection上所有未提交的语句。
成功时返回TRUE
,或者在失败时返回FALSE
。
Note:当关闭连接或脚本结束时(看哪个先)事务会自动回卷。需要明确地调用oci_commit()来提交事务,或oci_rollback()来中止事务。
Note:在 PHP 5.0.0 之前的版本必须使用ocirollback()替代本函数。该函数名仍然可用,为向下兼容作为oci_rollback()的别名。不过其已被废弃,不推荐使用。
参见oci_commit()。
参数
- $connection
An Oracle connection identifier, returned by oci_connect(),oci_pconnect() or oci_new_connect().
返回值
成功时返回TRUE
,或者在失败时返回FALSE
。
范例
Example #1 oci_rollback() example
<?php // Insert into several tables, rolling back the changes if an error occurs $conn = oci_connect('hr', 'welcome', 'localhost/XE'); $stid = oci_parse($conn, "INSERT INTO mysalary (id, name) VALUES (1, 'Chris')"); // The OCI_NO_AUTO_COMMIT flag tells Oracle not to commit the INSERT immediately // Use OCI_DEFAULT as the flag for PHP <= 5.3.1. The two flags are equivalent $r = oci_execute($stid, OCI_NO_AUTO_COMMIT); if (!$r) { $e = oci_error($stid); trigger_error(htmlentities($e['message']), E_USER_ERROR); } $stid = oci_parse($conn, 'INSERT INTO myschedule (startday) VALUES (12)'); $r = oci_execute($stid, OCI_NO_AUTO_COMMIT); if (!$r) { $e = oci_error($stid); oci_rollback($conn); // rollback changes to both tables trigger_error(htmlentities($e['message']), E_USER_ERROR); } // Commit the changes to both tables $r = oci_commit($conn); if (!r) { $e = oci_error($conn); trigger_error(htmlentities($e['message']), E_USER_ERROR); } ?>
Example #2 Rolling back to aSAVEPOINTexample
<?php $stid = oci_parse($conn, 'UPDATE mytab SET id = 1111'); oci_execute($stid, OCI_NO_AUTO_COMMIT); // Create the savepoint $stid = oci_parse($conn, 'SAVEPOINT mysavepoint'); oci_execute($stid, OCI_NO_AUTO_COMMIT); $stid = oci_parse($conn, 'UPDATE mytab SET id = 2222'); oci_execute($stid, OCI_NO_AUTO_COMMIT); // Use an explicit SQL statement to rollback to the savepoint $stid = oci_parse($conn, 'ROLLBACK TO SAVEPOINT mysavepoint'); oci_execute($stid, OCI_NO_AUTO_COMMIT); oci_commit($conn); // mytab now has id of 1111 ?>
注释
Note:Transactions are automatically rolled back when you close the connection, or when the script ends, whichever is soonest. You need to explicitly call oci_commit() to commit the transaction.
Any call to oci_execute() that uses
OCI_COMMIT_ON_SUCCESS
mode explicitly or by default will commit any previous uncommitted transaction.Any Oracle DDL statement such asCREATEorDROPwill automatically commit any uncommitted transaction.
Note:In PHP versions before 5.0.0 you must use ocirollback() instead.在当前版本中,旧的函数名还可以被使用,但已经被废弃并不建议使用。
参见
oci_commit()
提交未执行的事务处理oci_execute()
执行一条语句