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

(PECL solr >= 0.9.2) Creates a copy of a SolrDocument

(PECL solr >= 0.9.2) Checks if a field exists

(PECL solr >= 0.9.2) Returns internal information where the Exception was thrown

(PECL solr >= 0.9.2) Sets the search query

(PECL solr >= 0.9.2) Returns internal information where the Exception was thrown

(PECL solr >= 2.2.0) Allows grouping of documents that match the given query.

(PECL solr >= 0.9.2) Returns the minimum word length below which words will be ignored

(PECL solr >= 2.2.0) Returns true if group expanding is enabled

(PHP 4 >= 4.3.3, PHP 5 <= 5.0.5, PECL mnogosearch >= 1.0.0) Allocate mnoGoSearch session