function weightedRandom($resource, $field, $show)
{
$type = $this->getDocVarType($field);
if ($type == "unknown") {
return $resource;
// handle vad field passed
}
$random = new random();
foreach ($resource as $document) {
$doc = $document;
$random->add($doc, abs(intval($document[$field])));
}
$resource = $random->select_weighted_unique($show);
shuffle($resource);
return $resource;
}