# Zookeeper::getChildren

(PECL zookeeper >= 0.1.0)

Zookeeper::getChildren — Lists the children of a node synchronously

### 说明

public Zookeeper::getChildren(string `$path`, callable `$watcher_cb` = `null`): array

### 参数

`path`

  The name of the node. Expressed as a file name with slashes separating ancestors of the node.

`watcher_cb`

  If nonzero, a watch will be set at the server to notify the client if the node changes.

### 返回值

Returns an array with children paths on success, and false on failure.

### 错误／异常

This method emits PHP error/warning when parameters count or types are wrong or fail to list children of a node.

警告

Since version 0.3.0, this method emits ZookeeperException and it's derivatives.

### 示例

示例 #1 Zookeeper::getChildren() example

Lists children of a node.

`<?php
$zookeeper = new Zookeeper('locahost:2181');
$path = '/zookeeper';
$r = $zookeeper->getchildren($path);
if ($r) {
var_dump($r);
} else {
echo 'ERR';
}
?>`

以上示例会输出：

    array(1) {
      [0]=>
      string(6) "config"
    }

### 参见

- Zookeeper::create() - Create a node synchronously
- Zookeeper::delete() - Delete a node in zookeeper synchronously
- ZookeeperException

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