Zookeeper
PHP Manual

Zookeeper::setWatcher

Set a watcher function

Description

public bool Zookeeper::setWatcher(callable $watcher_cb)

Parameters

watcher_cb

A watch will be set at the server to notify the client if the node changes.

Return Values

Returns true on success or false on failure.

Errors/Exceptions

This method emits PHP error/warning when parameters count or types are wrong or fail to set watcher.

Caution

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

See Also

  • Zookeeper::exists
  • Zookeeper::get
  • ZookeeperException