<?php
$dismaxQuery = new SolrDisMaxQuery('lucene');
$dismaxQuery
->addPhraseField('first', 3, 1)
->addPhraseField('second', 4, 1)
->addPhraseField('cat', 55);
echo $dismaxQuery . PHP_EOL;
echo $dismaxQuery->removePhraseField('second');
?>
The above example will output
something similar to:
q=lucene&defType=edismax&pf=first~1^3 second~1^4 cat^55
q=lucene&defType=edismax&pf=first~1^3 cat^55