Horde_Db_Adapter_Pdo_Base::selectAssoc PHP Method

    public function selectAssoc($sql, $arg1 = null, $arg2 = null)
    {
        $stmt = $this->execute($sql, $arg1, $arg2);
        if (!$stmt) {
            return null;
        }
        $result = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);
        // Required to really close the connection.
        $stmt = null;
        return $result;
    }