- header.php -
Dans le header de chaque page sauf l'index:
<?php
if($logged==0) header("location: index.php");
?>

- include.php -
Dans toutes les pages:
<?php
require("../../shares/config.php");
require_once(CLASS_DIR.'classDBO.php');

/* Authentication */
session_start();
if($_SESSION['is_logged']==1) {
	$logged=1;
} else {
	$logged=0;
}

function logout() {
	session_unset();
	session_destroy();
}

/* Logout */
if($_GET['param']=="logout") {
	logout();
	header("location: index.php");
}
?>

- index.php -
Dans la page de login:
<?
$error_msg="";
$login_error=0;
if($processing==1) {
	$db_obj = new cDBObject();
	$qry_login="SELECT * FROM users WHERE `login`='".$login."' AND `password`='".$password."' AND `id_appli`='".$_appli."'";
	if($result=$db_obj->doQuery($qry_login)) {
		if($db_obj->num_rows($result)==0) $login_error=1;
		else {
			$row=$db_obj->fetch_result($result);
			$_SESSION['is_logged']=1;
			$_SESSION['login']=$login;
			$_SESSION['country']=$row['country'];
			$_SESSION['rights']=$row['group'];
			header("location: default.php");
		}
	}
}
if($login_error==1) $error_msg="Incorrect login or password";
?>