(PECL solr >= 0.9.2)
SolrQuery::getStatsFacets — Returns all the stats facets that were set
public SolrQuery::getStatsFacets ( ) : array
Returns all the stats facets that were set
This function has no parameters.
Returns an array on success and null if not set.
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https://www.php.net/manual/en/solrquery.getstatsfacets.php