title: how to search in multiple fields with solr php client?
body: <p>when i do a standard search it just search for one field type.</p>
  
  <pre><code>$results = $solr-&gt;search($query, $offset, $limit);
  </code></pre>
  
  <p>when i try this:</p>
  
  <pre><code>$params = array('qf' =&gt; 'threads.title posts.body');
  $results = $solr-&gt;search($query, $offset, $limit, $params);
  </code></pre>
  
  <p>it still doesnt work.</p>
  
  <p>any idea?</p>