# Session::setSavepoint

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Session::setSavepoint — Create savepoint

### 说明

public mysql_xdevapi\Session::setSavepoint(string `$name` = ?): string

Create a new savepoint for the transaction.

警告

本函数还未编写文档，仅有参数列表。

### 参数

`name`

  The name of the savepoint. The name is auto-generated if the optional `name` parameter is not defined as 'SAVEPOINT1', 'SAVEPOINT2', and so on.

### 返回值

The name of the save point.

### 示例

示例 #1 mysql_xdevapi\Session::setSavepoint() example

`<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$collection = $session->getSchema("addressbook")->getCollection("names");
$session->startTransaction();
$collection->add( '{"test1":1, "test2":2}' )->execute();
$savepoint = $session->setSavepoint();
$collection->add( '{"test3":3, "test4":4}' )->execute();
$session->releaseSavepoint($savepoint);
$session->rollback();
?>`
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