$sql = "SELECT DISTINCT a.id_article, a.id_categorie, a.date_entree, a.time_entree, a.nom,a.first,
							t.id_article , a.date AS date_a 
							FROM articles a, textes t 
							WHERE a.id_article=t.id_article 
							AND id_categorie='$cat' 
							AND first='0' 
							ORDER BY date_a DESC";