Zookeeper::getChildren

(PECL zookeeper >= 0.1.0)

Zookeeper::getChildrenLists 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