title: dns_get_record query failed
body: <p>I was trying to create a DNS availability checker, and while testing <code>dns_get_record()</code>, some of the results failed.</p>
  
  <p>My code is something like this:</p>
  
  <pre class="lang-php prettyprint-override"><code>$result = dns_get_record("pitottube.com", DNS_ANY);
  print_r($result);
  </code></pre>
  
  <p>Normally, it is supposed to return something in an array (if it's available), or an empty array (if it's not) -- but if I put "pitottube.com", it gives a warning like this:</p>
  
  <pre><code>Warning: dns_get_record() [function.dns-get-record]: DNS Query failed
  </code></pre>
  
  <p>Can you help with this?</p>