SolrDisMaxQuery::setBoostFunction
PHP function
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Sets a Boost Function (bf parameter)
Description
SolrDisMaxQuery::setBoostFunction(string $function): SolrDisMaxQuery
Sets Boost Function (bf parameter).
Functions (with optional boosts) that will be included in the user's query to influence the score. Any function supported natively by Solr can be used, along with a boost value. e.g.:
recip(rord(myfield),1,2,3)^1.5
Parameters
function
Return Values
SolrDisMaxQuery
Examples
SolrDisMaxQuery::setBoostFunction() example
php
<?php
$dismaxQuery = new SolrDisMaxQuery('lucene');
$boostRecentDocsFunction = "recip(ms(NOW,mydatefield),3.16e-11,1,1)";
$dismaxQuery->setBoostFunction($boostRecentDocsFunction);
echo $dismaxQuery.PHP_EOL;
?>The above example will output something similar to:
output
q=lucene&defType=edismax&bf=recip(ms(NOW,mydatefield),3.16e-11,1,1)