(PECL zookeeper >= 0.1.0)

Zookeeper::existsChecks the existence of a node in zookeeper synchronously


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

Liste de param├Ętres


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


if nonzero, a watch will be set at the server to notify the client if the node changes. The watch will be set even if the node does not

Valeurs de retour

Returns the value of stat for the path if the given node exists, otherwise false.

Erreurs / Exceptions

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


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


Exemple #1 Zookeeper::exists() example

Check the existence of a node.

= new Zookeeper('locahost:2181');
$path '/path/to/node';
$r $zookeeper->exists($path);
if (
'N/A or ERR';

L'exemple ci-dessus va afficher :


Voir aussi

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