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

(PECL solr >= 2.2.0) Returns group fields (group.field parameter values)

(PECL solr >= 0.9.2) Sets the search query

(PECL solr >= 0.9.2) Maps to stats.field parameter

(PECL solr >= 0.9.2) Used to control how the results should be sorted

(PECL solr >= 0.9.2) Returns the state of the hl parameter

(PECL solr >= 0.9.2) Returns the maximum number of terms Solr should return

(PECL solr >= 0.9.2) Sets the explainOther common query parameter

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

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