<?php
//ini_set('error_display', 'on');
ini_set('error_reporting', E_ALL);
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Vérification de l'authentification</title>
    </head>
    <body>
        <h1>Vérification de l'authentification</h1>
        <?php
        $login = "";
        if (isset($_POST['login'])) { // formulaire reçu ?
            $login = $_POST['login'];
            if ($_POST['motdepasse'] == 'secret') { // mot de passe correct ?
                echo "<p>Bonjour, " . $_POST['login'] . "</p>";
                $pasDeFormulaire = TRUE;
            } else {
                echo "<p>Essaie encore.</p>";
            }
        }
        if (empty($pasDeFormulaire)) {
        ?>
        <h1>Authentification</h1>
        <form name="auth" method="POST" action="login_check.php">
            <ul>
                <li>
                    Login :
                    <input type="text" name="login" value="<?php
                    echo htmlspecialchars($login); ?>" />
                </li>
                <li>
                    Mot de passe :
                    <input type="password" name="motdepasse" value="" />
                </li>
                <li>
                    <input type="submit" value="Valider" />
                </li>
            </ul>
        </form>
        <?php
        }
        ?>
    </body>
</html>
