(PHP 4 >= 4.0.5, PHP 5 <= 5.0.5, PECL mnogosearch >= 1.0.0) Get mnoGoSearch error message

(PECL sphinx >= 0.1.0) Set grouping attribute

(PHP 4 >= 4.0.5, PHP 5 <= 5.0.5, PECL mnogosearch >= 1.0.0) Allocate mnoGoSearch session

(PECL sphinx >= 0.1.0) Extract keywords from query

(PECL solr >= 2.2.0) Add a field to be used to group results.

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

(PECL solr >= 2.2.0) Specifies the number of results to return for each group. The server default value is

(PECL solr >= 0.9.2) Returns the current version of the Solr extension

(PHP 4 >= 4.0.5, PHP 5 <= 5.0.5, PECL mnogosearch >= 1.0.0) Perform search

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