L'erreur montre que la variable en ligne n'est pas définie. Comment la résoudre ?
<?php
session_start();
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/ html; charset=utf-8" />
<title>在线考试系统</title>
<style type="text/css">
.style1 {couleur : #FFFFFF; taille de police : 12 px ; };
</style>
</head>
<body>
<table width="1002" border="0" cellpacing="0" cellpadding="0" >
<tr>
<td width="1002" ><img src="images/bg_1.jpg" width="1002" height="72" usemap="#Map" border= "0"></td>
</tr>
<tr>
<td width="1002"><img src="images/bg_2.jpg" width=" 1002" height="142" ></td>
</tr>
</table>
<table width="1002" border="0" cellpadding="0 " cellpacing="0">
<tr>
<td width="111" height="429" bgcolor="#CCCCCC" > </td>
< td width="778" valign="top">
<table width="778" align="center" border="0" cellpacing="0" cellpadding="0">
<tr> ;
<td height="26" background="images/bg_4.jpg"><largeur du tableau="100%" border="0">
<tr>
<td largeur ="30%"> </td>
<td width="70%"><span class="style1">当前位置：在线考试系统 > <?php echo $online ; ?></span></td> tr>
include("zhuce.php");
include("xgmm.php"); break; case "score query": include("cjcx.php"); break; case "entrer dans la salle d'examen ":
include("jrkc.php"); break; case "Sélectionner les questions d'examen": include("xzkt.php"); break; case "Démarrer exam":
include("ksks.php");
<td > < ;img src="images/bg_7.jpg" width="778 " height="24"></td>
<td width="113" bgcolor="#CCCCCC">&n bsp;</td> </tr>< /table><br><p> </p>
<map name="Carte">
<area shape="rect" coords=" 360,31,419,51" href="index.php?online= Inscription des candidats">
<area shape="rect" coords="448,33,505,51" href="index.php?online=Connexion candidat ">
<area shape="rect" coords= "534,31,595,49" href="index.php?online=Changer le mot de passe">
<area shape="rect" coords="621 ,32,681,51" href="index.php?online=Requête de réalisations">
<area shape="rect" coords="708,32,769,52" href="index.php?online=Participer à l'examen room">
<area shape="rect" coords=" 797,32,853,49" href="tcdl.php">
</map>
</body>
< /html>
