prefix}entry` AS e {$restrict} GROUP BY period ORDER BY period ASC SQL; $stm = $this->bd->prepare($sql); $stm->execute(); $res = $stm->fetchAll(PDO::FETCH_NAMED); $repartition = array(); foreach ($res as $value) { $repartition[(int) $value['period']] = (int) $value['count']; } return $this->convertToSerie($repartition); } }