SolrDisMaxQuery::setBoostFunction
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SolrDisMaxQuery::setBoostFunction — Sets a Boost Function (bf parameter)
Description
public 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
Examples
Example #1 SolrDisMaxQuery::setBoostFunction() example
<?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:
q=lucene&defType=edismax&bf=recip(ms(NOW,mydatefield),3.16e-11,1,1)
See Also
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/solrdismaxquery.setboostfunction.php