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