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