注意：未定义的索引：第63行的C：\\ wamp \\ www \\ chatsystem \\ index.php中的名称

Question

I get this error... Its a chat system iver been working on for a couple of days. And the lines are:

<div id="wrapper">
    <div id="menu">
        <p class="welcome">Velkommen, <b><?php echo $_SESSION['name']; ?></b></p>
        <p class="logout"><a id="exit" href="#">Forlad Chatten</a></p>
        <script type="text/javascript">
            // jQuery Document
        $(document).ready(function(){
        //If user wants to end session
        $("#exit").click(function(){
        var exit = confirm("Are you sure you want to end the session?");
        if(exit==true){window.location = 'index.php?logout=true';}      
            });
        });
</script>

Answer 1

You have to start your session at the top of your file with:

session_start();

So you have access to the Session Array.

Also make sure you have set $_SESSION['name'] !

You can check if $_SESSION['name'] isset so you don't get a warning and it's only outputed when it is set like this:

<?php if (isset($_SESSION['name'])) echo $_SESSION['name']; ?>

Answer 2

I think you forgot to put a die() after loginFrom() on line 28 like so:

if(!isset($_SESSION['name'])){
    loginForm();
    die();
}