ZF荧光笔短语标记

Question

我有这段代码：

    $query = '"ala ma"';

    try {
        $index = Zend_Search_Lucene::open(ROOT_PATH.'/data');
    }catch(Zend_Search_Lucene_Exception $e){
        $index = Zend_Search_Lucene::create(ROOT_PATH.'/data');
    }

    Zend_Search_Lucene_Search_QueryParser::setDefaultEncoding('utf-8');
    Zend_Search_Lucene_Analysis_Analyzer::setDefault(
        new Zend_Search_Lucene_Analysis_Analyzer_Common_Utf8Num_CaseInsensitive()
    );

    $doc = new Zend_Search_Lucene_Document();
    $doc->addField(Zend_Search_Lucene_Field::text('title', 'ala ma kota ala ma kota ala', 'utf-8'));
    $index->addDocument($doc);
    $index->commit();

    $query = Zend_Search_Lucene_Search_QueryParser::parse($query);

$results = $index->find($query);


foreach ($results as $result){
    echo $query->htmlFragmentHighlightMatches($result->title, 'utf-8') . '<br></br>'; 
}

我只需要标记找到的短语和荧光笔也选择单个单词，在这种情况下：

我只需要标记：＆＃34; ala ma＆＃34;，但荧光笔也选择最后一个字符串：ala

有人知道这个的答案吗？