<?php
$dismaxQuery = new SolrDisMaxQuery("lucene");
$dismaxQuery
->addBigramPhraseField('cat', 2, 5.1)
->addBigramPhraseField('feature', 4.5)
;
echo $dismaxQuery;
?>
The above example will output
something similar to:
q=lucene&defType=edismax&pf2=cat~5.1^2 feature^4.5