$sql="Select * from album as al
inner join artiste as ar on ar.id_artiste = al.id_artiste
where ar.id_artiste =".$_SESSION'ARTISTE']'ID']."";
et si ça merde encore :
$sql="Select * from album as al
inner join artiste as ar on ar.id_artiste = al.id_artiste
where ar.id_artiste =".$_SESSION'ARTISTE']'ID'];
J'espère ne pas avoir dis trop d’âneries sur le coup :)