Zookeeper
PHP Manual

Zookeeper::getChildren

Lists the children of a node synchronously

Description

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

Parameters

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.

Return Values

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

Errors/Exceptions

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

Caution

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

Examples

Example #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';
}

?>

The above example will output:

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

See Also

  • Zookeeper::create
  • Zookeeper::delete
  • ZookeeperException