voila le code au cas ou :
if((isset($_GET['ass']))&&(isset($_GET['acad']))&&(isset($_GET['resp']))&&(isset($_GET['tel'])))
{
?>
<br/><br/><br/><form action="transport.php" method="POST">
<table>
<tr>
<td>Moyen de Transport</td>
<td><input name="transport" type="text" value="" size="15"><br/></td>
</tr>
<tr>
<td>Heure d'arrivée sur Amiens</td>
<td><input name="heure" type="text" value="" size="4"><br/></td>
</tr>
<tr>
<td>Desirez-vous une navette?</td>
<td>oui<input name="navette" type="radio" value="O" > non
<input name="navette" type="radio" value="N" ><br/></td>
</tr>
<tr>
<td>Hôtel choisi</td>
<td><input name="hotel" type="text" value=""><br/></td>
</tr>
<tr>
<?php
echo'<input name="ass" type="hidden" value="'.$_GET['ass'].'">';
echo'<input name="acad" type="hidden" value="'.$_GET['acad'].'">';
echo'<input name="resp" type="hidden" value="'.$_GET['resp'].'">';
echo'<input name="tel" type="hidden" value="'.$_GET['tel'].'">';
?>
<td colspan="2"><br/><center><input type="submit" value="Valider" name="ok"></center><br/></td>
</tr>
</form>
</table>
</form>
</center>
<?php
if(isset($_POST['ok']))
{
include'bdd.php';
$ass=$_POST['ass'];
$acad=$_POST['acad'];
$resp=$_POST['resp'];
$tel=$_POST['tel'];
$transport=$_POST['transport'];
$heure=$_POST['heure'];
$hotel=$_POST['hotel'];
if($_POST['navette']=="O")
{
$navette="oui";
}
elseif($_POST['navette']=="N")
{
$navette="non";
}
$requete="INSERT INTO transport VALUES('','".$ass."','".$acad."','".$transport."','".$heure."','".$navette."','".$hotel."')";
@mysql_query($requete) or die(mysql_error());
//header("Location:transport.php?inscription_ok");
echo '<script>document.location="restauration.php?ass='.$ass.'&acad='.$acad.'&resp='.$resp.'&tel='.$tel.'";</script>';
}
}
Merci d'avance