Someone

                  <form name="insertion" action="../changenum.php" method="POST">
                  <input type="hidden" name="table" value="info_accueil" />
                  <input type="hidden" name="prefixe" value="info_accueil_" />
                  <input type="hidden" name="pageretour" value="adminArticles/accueilmod.php"/>
                    <table>
                      <tr>
                        <td>Numéro de l'article</td>
                        <td><input type="text" size="10px" name="ancien_num"></td>

                        <td>Nouveau numéro</td>
                        <td><input type="text" size="10px" name="nouveau_num"></td>

                      <tr align="center">
                        <td colspan="4"><input type="submit" value="Enregistrer"></td>
                      </tr>
                    </table>
                  </form>