public static function getTopTerms($limit)
{
$criteria = new CDbCriteria();
$thisperiod = round(time() / (86400 * 30));
$thisperiod--;
// find the last period one
$condition = "`search` NOT LIKE '%*%' AND `search` NOT LIKE '%:%' AND `period` = {$thisperiod}";
$criteria->select = 'search';
$criteria->condition = $condition;
$criteria->order = 'frequency DESC';
$num = $limit * 2;
$criteria->limit = $num;
$tops = static::model()->findAll($criteria);
$returns = array();
$dealModel = new DealModel();
foreach ($tops as $t) {
$exists = $dealModel->isTermExists($t->search);
if ($exists && strlen($t->search) < 13) {
$returns[] = $t->search;
}
}
return array_slice($returns, 0, $limit);
}
