PHP Manual
ZookeeperConfig
Gets the last committed configuration of the ZooKeeper cluster as it is known to the server to which the client is connected, synchronously

ZookeeperConfig::get

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

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

说明

public ZookeeperConfig::get ([ callable $watcher_cb = NULL [, array &$stat = NULL ]] ) : string

参数

watcher_cb: If nonzero, a watch will be set at the server to notify the client if the node changes.
stat: If not NULL, will hold the value of stat for the path on return.

返回值

Returns the configuration string on success, and false on failure.

错误／异常

This method emits ZookeeperException and it's derivatives when parameters count or types are wrong or fail to get configuration.

范例

Example #1 ZookeeperConfig::get() example

Get configuration.

 <?php
$zk = new Zookeeper();
$zk->connect('localhost:2181');
$zk->addAuth('digest', 'timandes:timandes');
$zkConfig = $zk->getConfig();
$r = $zkConfig->get();
if ($r)
  echo $r;
else
  echo 'ERR';
?>

以上例程会输出：

server.1=localhost:2888:3888:participant;0.0.0.0:2181
version=0xca01e881a2

参见

ZookeeperConfig::set() - Change ZK cluster ensemble membership and roles of ensemble peers
ZookeeperConfig::add() - Add servers to the ensemble
ZookeeperConfig::remove() - Remove servers from the ensemble
ZookeeperException

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