Gets the data associated with a node synchronously
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    Zookeeper::get

    (PECL zookeeper >= 0.1.0)

    Zookeeper::get — Gets the data associated with a node synchronously

    Description

    public Zookeeper::get(
        string $path,
        callable $watcher_cb = null,
        array &$stat = null,
        int $max_size = 0
    ): string

    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.

    stat

    If not NULL, will hold the value of stat for the path on return.

    max_size

    Max size of the data. If 0 is used, this method will return the whole data.

    Return Values

    Returns the data on success, and false on failure.

    Errors/Exceptions

    This method emits PHP error/warning when parameters count or types are wrong or fail to get value from node.

    Caution

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

    Examples

    Example #1 Zookeeper::get() example

    Get value from node. 

    <?php$zookeeper = new Zookeeper('locahost:2181');$path = '/path/to/node';$value = 'nodevalue';$zookeeper->set($path, $value);$r = $zookeeper->get($path);if ($r)  echo $r;else  echo 'ERR';?>

    The above example will output:

    nodevalue

    Example #2 Zookeeper::get() stat example

    Get node stat info. 

    <?php$zookeeper = new Zookeeper('localhost:2181');$path = '/path/to/node';$stat = [];$zookeeper->get($path, null, $stat);var_dump($stat);?>

    The above example will output:

    array(11) {
  ["czxid"]=>
  float(0)
  ["mzxid"]=>
  float(0)
  ["ctime"]=>
  float(0)
  ["mtime"]=>
  float(0)
  ["version"]=>
  int(0)
  ["cversion"]=>
  int(-2)
  ["aversion"]=>
  int(0)
  ["ephemeralOwner"]=>
  float(0)
  ["dataLength"]=>
  int(0)
  ["numChildren"]=>
  int(2)
  ["pzxid"]=>
  float(0)
}

    See Also