if($donnees['password'] == $password){
			$_SESSION['pseudo'] = $donnees['pseudo']; 
			header('Location:membre.php'); }
			elseif($donnees['password'] != $password){
			if($exist == 0){ 
			header('Location:wrong_pseudo.php');
			}
			else{ 
			header('Location:wrong_pw.php');
			}
		}