(PECL solr >= 0.9.2) Enables or disables highlighting

(PECL solr >= 0.9.2) Specifies the backup field to use

(PECL solr >= 0.9.2) Returns the maximum number of query terms that will be included in any generated query

(PECL solr >= 0.9.2) Returns the value for the facet.date.other parameter

(PECL solr >= 0.9.2) Sets the maximum number of query terms included

(PECL solr >= 2.2.0) Enables caching for result grouping

(PECL solr >= 0.9.2) Specify the regular expression for fragmenting

(PECL solr >= 0.9.2) Returns the maximum number of highlighted snippets to generate per field

(PECL solr >= 0.9.2) Returns the value for the facet.date.end parameter

(PECL solr >= 0.9.2) Require field matching during highlighting