SDK
SDK PHP v3.x
1

# pfmerge

Merges multiple HyperLogLog data structures into an unique HyperLogLog structure stored at key, approximating the cardinality of the union of the source structures.

[Redis documentation]


# pfmerge(key, sources, [options], callback)

Arguments Type Description
key string Destination key identifier
sources string List of HyperLogLog source key identifiers
options JSON Object Optional parameters
callback function Callback

# Options

Option Type Description Default
queuable boolean Make this request queuable or not true

# Callback Response

Returns null if successful.

# Usage

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<?php
use \Kuzzle\Kuzzle;
$kuzzle = new Kuzzle('localhost');
try {
  $kuzzle->memoryStorage()->pfmerge('key', ['key1', 'key2', '...']);
}
catch (ErrorException $e) {
}