(PECL solr >= 0.9.2) Determines the ordering of the facet field constraints

(PECL solr >= 0.9.2) Returns the query fields and their boosts

(PECL solr >= 2.2.0) Returns the group.limit value

(PECL solr >= 2.2.0) Returns group functions (group.func parameter values)

(PECL solr >= 2.2.0) Returns the group.sort value

(PECL solr >= 0.9.2) Removes one of the stats.facet parameters

(PECL solr >= 2.2.0) Returns an array of fields

(PECL solr >= 0.9.2) Specifies how to sort the returned terms

(PECL solr >= 0.9.2) Returns the maximum number of characters of the field to return

(PECL solr >= 2.2.0) Returns the expand query expand.q parameter