(PECL swish >= 0.1.0) Get the list of properties for the index

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

(PECL solr >= 0.9.2) Toggles the echoHandler parameter

(PECL solr >= 2.2.0) Allows grouping results based on the unique values of a function query (group.func parameter)

(PECL sphinx >= 0.1.0) Get the last warning

(PECL solr >= 0.9.2) Specifies how to sort the returned terms

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

(PECL solr >= 0.9.2) Returns the maximum number of constraint counts that should be returned for the facet

(No version information available, might only be in Git) Removes phrase bigram field (pf2 parameter)

(PECL solr >= 0.9.2) Rollbacks all add/deletes made to the index since the last commit