zcard #

Returns the number of elements held by a sorted set.

[Redis documentation]

zcard(key, [options], callback) #

Options #

Callback Response #

Returns an integer containing the number of elements in a sorted set.

Usage #

<?php
use \Kuzzle\Kuzzle;
$kuzzle = new Kuzzle('localhost');
try {
  $count = $kuzzle->memoryStorage()->zcard('key');
}
catch (ErrorException $e) {
}

Callback response:

4