Samples Login / Logout script

login.php :

<?php

    // Initisalition
    if ($_COOKIE["SESSION"]=='') {
        setcookie("SESSION", 'AUTH', 0,'/'); 
        
    // Identification perdu (time-out ou logoff)
    } else if ($_SERVER['PHP_AUTH_USER']!='' && $_COOKIE["USER_SESSION"]=='') {
        $_SERVER['PHP_AUTH_USER'] = '';
    }

    // Controle identification à la base 
    $ident = executeSQL("SELECT * FROM UTILISATEURS WHERE upper(IDENTIFIANT)=Upper('".$_SERVER['PHP_AUTH_USER']."')");
    if ($_SERVER['PHP_AUTH_USER']!='' && strtoupper($ident['IDENTIFIANT'])==strtoupper($_SERVER['PHP_AUTH_USER']) && $ident['MOT_DE_PASSE']==$_SERVER['PHP_AUTH_PW']) {
        $user = $_SERVER['PHP_AUTH_USER'];
        setcookie("USER_SESSION", $user, time()+300,'/'); // 5 Minutes !
    
    // Mot de passe incorecte : demande identification
    } else {
        setcookie("SESSION", '', 1,'/'); 
        header('WWW-Authenticate: Basic realm="My Realm"');
        header('HTTP/1.0 401 Unauthorized');
        die;
    }
    
?>
<html>
    <body >

        Bonjour <?php echo $ident['NOM'].' '.$ident['PRENOM']; ?>
        <br>
        <br>
        <a href="http://logout.php">Deconnexion</a>
    </body>
</html>

logout.php :

<?php
setcookie("USER_SESSION", '', 1,'/');
header('Location: http://login.php');
?>