am using drupal_http_build_query and have part of my code as follows:

$or = db_or();
$or->condition('cid',$fField1);
$or->condition('cid',$fField2);
$or->condition('cid',$fField3);
$or->condition('cid',$fField4);
$or->condition('cid',$fField5);
$or->condition('cid',$fField6);
$or->condition('cid',$fField7);
$or->condition('cid',$fField8);

$querydata  = db_select('webform_submitted_data', 'wsd')
  ->fields('wsd',array('data'))
  ->condition('nid', $nodeID, '=')
  ->condition('sid', $sID, '=')         
  ->condition($or)
  ->execute()
  ->fetchAll();


$result = array();
$i = 1;
foreach ($querydata as $qvalue) {
    $key = 'mapField'.$i;
    $result[] = array($$key => $qvalue->data);
    $i++;
}

$post_data = drupal_http_build_query($result,'', '&');

When printing the $post_data variable value, am getting something like this: name=john&1[address]=street1&2[phone]=123456789

Notice the 1[] and 2[] after the &in the printed value. Any fix to remove these so that I get name=john&address=street1&phone=123456789?