Php/docs/solrcollapsefunction.getfield
From Get docs
SolrCollapseFunction::getField
(PECL solr >= 2.2.0)
SolrCollapseFunction::getField — Returns the field that is being collapsed on
Description
public SolrCollapseFunction::getField ( ) : string
Returns the field that is being collapsed on.
Parameters
This function has no parameters.