Change ZK cluster ensemble membership and roles of ensemble peers

# ZookeeperConfig::set

(PECL zookeeper >= 0.6.0, ZooKeeper >= 3.5.0)

ZookeeperConfig::set — Change ZK cluster ensemble membership and roles of ensemble peers

### 说明

public function ZookeeperConfig::set(string `$members`, int `$version` = -1, array `&$stat` = `null`): void

### 参数

`members`

  Comma separated list of new membership (e.g., contents of a membership configuration file) - for use only with a non-incremental reconfiguration.

`version`

  The expected version of the node. The function will fail if the actual version of the node does not match the expected version. If -1 is used the version check will not take place.

`stat`

  If not NULL, will hold the value of stat for the path on return.

### 返回值

没有返回值。

### 错误／异常

This method emits ZookeeperException and its derivatives when parameters count or types are wrong or fail to save value to node.

### 示例

示例 #1 ZookeeperConfig::set() example

Reconfig.

    <?php
    $client = new Zookeeper();
    $client->connect('localhost:2181');
    $client->addAuth('digest', 'timandes:timandes');
    $zkConfig = $client->getConfig();
    $zkConfig->set("server.1=localhost:2888:3888:participant;0.0.0.0:2181");
    ?>

### 参见

- ZookeeperConfig::get() - Gets the last committed configuration of the ZooKeeper cluster as it is known to the server to which the client is connected, synchronously
- ZookeeperConfig::add() - Add servers to the ensemble
- ZookeeperConfig::remove() - Remove servers from the ensemble
- ZookeeperException

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