(PECL solr >= 0.9.2) Returns the raw request sent to the Solr server

(PECL solr >= 0.9.2) Returns whether or not to enable highlighting for range/wildcard/fuzzy/prefix queries

(PECL solr >= 0.9.2) Returns the frequency below which terms will be ignored in the source document

(PECL sphinx >= 0.1.0) Set a range of accepted document IDs

(PECL solr >= 0.9.2) Requests a return of sub results for values within the given facet

(PECL solr >= 0.9.2) Adds another field to the document

(PECL solr >= 0.9.2) Sets a field to use for similarity

(PECL solr >= 0.9.2) Maps to facet.date.start

(PECL solr >= 0.9.2) Returns all the fields to use for similarity

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