/**
* Get the most searched queries
*
* @param $from begin time
* @param $to end time
*
* @return associative array
*/
public function getMostSearchedQueries($from = null, $to = null, $limit = 20)
{
$subSelect = $this->sql->select();
$subSelect->columns(array('phrase' => 'value'));
$subSelect->join(array('noresults' => 'user_stats_fields'), 'user_stats_fields.id = noresults.id', array());
$subSelect->join(array('user_stats' => 'user_stats'), 'user_stats.id = user_stats_fields.id', array('session' => 'session'));
if ($from && $to) {
$format = "Y-m-d H:i:s";
$from = date($format, $from);
$to = date($format, $to);
$subSelect->where->greaterThan('user_stats.datestamp', $from);
$subSelect->where->lessThan('user_stats.datestamp', $to);
}
$subSelect->where->equalTo('user_stats_fields.field', 'phrase');
$subSelect->where->equalTo('noresults.field', 'noresults');
$subSelect->where->EqualTo('noresults.value', 'false');
$subSelect->where->notEqualTo('user_stats_fields.value', '');
$subSelect->group(array('phrase', 'session'));
$select = new \Zend\Db\Sql\Select();
$select->columns(array('query' => 'phrase', 'count' => new Expression("COUNT(*)")));
$select->from(array('phrase' => $subSelect));
$select->group(array('phrase'));
$select->order('count desc');
$select->limit($limit);
$statement = $this->sql->prepareStatementForSqlObject($select);
$result = $statement->execute();
return $result;
}
