Soucis connection

[Pyl]

Code PHP :

<?php 

case '0' :

        session_start();

    if(empty($_SESSION['connection'])) 

    {

    echo'<br><br><form method="POST" action="identification.php?page=1">';

    echo'<table align="center"><tr><td><font size=2 color=white> Pseudo :</font></td><td><input type="text" name="Pseudo" size="10"></td></tr>';

    echo'<tr><td><font size=2 color=white> Mot de Passe : </font></td><td><input type="password" name="Mot_de_Passe" size="10"></td></tr>';

    echo'</table><center><br><input type="submit" value="s\'identifier"></center>';

    echo'</form>';

    echo'<br><br><center><img src="/image/we need you.jpeg"</center>';

    }

else 

    {

    $login=$_SESSION['login'];

    $id=$_SESSION['id'];    

    echo '<center><br><br>Au revoir <b>'.$_SESSION['login'].'</b>,et merci de votre visite. A bientôt !</center>';    

    echo'<table align="center"><tr class="menu"><td><br><br><center><img src="/image/logo.gif"></center></td></tr><tr class="menu"></tr>';

    echo'<tr class="menu"><td><br><br><center><form method="POST" action="identification.php?page=3"><input type="submit" value="D&eacute;connexion"></center></form></td></tr></table>';}

    break;