$nb_billets_par_page = 2;

$requete2 = mysql_query('SELECT COUNT(*) AS nb_billets_archives FROM billets ') or die(mysql_error());
$donnees2 = mysql_fetch_array($requete2);
$total_des_billets = $donnees2['nb_billets_archives'];

$nb_de_pages = ceil($total_des_billets / $nb_billets_par_page);

echo 'Voir page : ';

for($i = 1 ; $i <= $nb_de_pages ; $i++)
        {
echo '<a href="index.php?archivesbillets&amp;voirpage=' .$i. '">' .$i. '</a>';
        }