Calcule des heures passé sur un test

gistfile1.aw

		$conn = $this->container->get('database_connection');

		$tempspasse = $conn->fetchAll(
			"SELECT *, MIN(ddt.datedebut) FROM DateDebutTest ddt
			   LEFT JOIN ResultatsTests rt ON ddt.utilisateur_id = rt.utilisateur_id
			      WHERE rt.test_id = ddt.test_id
				     && rt.question_id = ddt.question_id
					    && ddt.test_id = $id"
		);

		$datedebut 		= new \Datetime($tempspasse[0]['datedebut']);
		$datefin 				= new \Datetime($tempspasse[0]['date_fin']);
		$diff 					= $datedebut->diff($datefin);

		// $temp_examen= $diff->format('%y-%m-%d %h:%i:%s');
		$temp_examen= $diff->format('%h hr : %i mm : %s sec');