There are no limitations for field names in Zend_Search_Lucene.
Nevertheless it's a good idea not to use 'id' and
'score' names to avoid ambiguity in QueryHit
properties names.
The Zend_Search_Lucene_Search_QueryHit id
and score properties always refer to internal Lucene document id
and hit score. If
the indexed document has the same stored fields, you have to use the
getDocument() method to access them:
<?php
$hits = $index->find($query);
foreach ($hits as $hit) {
// Get 'title' document field
$title = $hit->title;
// Get 'contents' document field
$contents = $hit->contents;
// Get internal Lucene document id
$id = $hit->id;
// Get query hit score
$score = $hit->score;
// Get 'id' document field
$docId = $hit->getDocument()->id;
// Get 'score' document field
$docId = $hit->getDocument()->score;
// Another way to get 'title' document field
$title = $hit->getDocument()->title;
}