(PECL solr >= 0.9.2)
SolrQuery::setFacetLimit — Maps to facet.limit
public SolrQuery::setFacetLimit ( int $limit [, string $field_override ] ) : SolrQuery
Maps to facet.limit. Sets the maximum number of constraint counts that should be returned for the facet fields.
limit
The maximum number of constraint counts
field_override
The name of the field.
Returns the current SolrQuery object, if the return value is used.
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https://www.php.net/manual/en/solrquery.setfacetlimit.php