gistfile1.txt

<?php

$c = $modx->newQuery('modResource');
$c->where(array(
  'published' => 1,
  'hidemenu' => 0));
$c->sortby('unpub_date','asc');
$c->limit(10);

$resources = $c->getCollection('modResource',$c);

$months = array();
foreach ($resources as $res) {
  $m = date('n',strtotime($res->get('unpub_date')));
  $months[$m][] = $res;
}

// Now loop through the months and add to the output.
$o = '';
$month_names = array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
foreach ($months as $mon) {
  $o .= $month_names[$mon];
  foreach ($mon as $event) {
    $o .= $modx->getChunk('tplChunkName',$event->toArray());
  }
}
return $o;