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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PHP 5, PECL OCI8 >= 1.1.0)
oci_rollback — 回滚未提交的事务
$connection
) 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() 。
connection
An Oracle connection identifier, returned by oci_connect() , oci_pconnect() or oci_new_connect() .
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
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 a SAVEPOINT example
<?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
?>
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 as CREATE or DROP will 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。