Notice: Undefined index: ZZZZZZWTF?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4261133/php-notice-undefined-variable-and-notice-undefined-index">PHP: &ldquo;Notice: Undefined variable&rdquo;  and &ldquo;Notice: Undefined index&rdquo;</a>  </p>
</blockquote>



<p>All of a sudden my php code has come up with :</p>

<p>Notice: Undefined index: submit in C:\xampp\htdocs\globalautoparts\register.php on line 36</p>

<p>Notice: Undefined index: fullname in C:\xampp\htdocs\globalautoparts\register.php on line 40</p>

<p>Notice: Undefined index: username in C:\xampp\htdocs\globalautoparts\register.php on line 41</p>

<p>Notice: Undefined index: password in C:\xampp\htdocs\globalautoparts\register.php on line 42</p>

<p>Notice: Undefined index: repeatpassword in C:\xampp\htdocs\globalautoparts\register.php on line 43</p>

<p>Notice: Undefined index: email in C:\xampp\htdocs\globalautoparts\register.php on line 45</p>

<p>on the registration page. </p>

<p>How do i fix it?</p>

<p>This is my code:</p>

<pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt;
&lt;html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"&gt;
&lt;head&gt;
    &lt;meta http-equiv="content-type" content="text/html; charset=utf-8" /&gt;
    &lt;meta name="author" content="Luka Cvrk (solucija.com)" /&gt;
    &lt;meta name="keywords" content="conceptnova, concept, framework, web, content, corporate, business" /&gt;
    &lt;meta name="description" content="Conceptnova" /&gt;   
    &lt;link rel="stylesheet" href="css/main.css" type="text/css" media="screen, projection" /&gt;
    &lt;title&gt;Global Autoparts | Home&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;div id="wrap"&gt;
        &lt;div id="header_top"&gt;
        &lt;h1 id="logo"&gt;&lt;a href="#" title="Conceptnova"&gt;&lt;img src="images/logo.gif" align="left" /&gt;&lt;/a&gt;&lt;/h1&gt;
        &lt;h1 id="logo"&gt;&lt;/h1&gt;
        &lt;ul&gt;
                &lt;li&gt;&lt;a href="index.php"&gt;home&lt;/a&gt;&lt;/li&gt;
                &lt;li&gt;&lt;a href="aboutus.php"&gt;about us&lt;/a&gt;&lt;/li&gt;
                &lt;li&gt;&lt;a href="services.php"&gt;services&lt;/a&gt;&lt;/li&gt;
                &lt;li&gt;&lt;a href="portfolio.php"&gt;portfolio&lt;/a&gt;&lt;/li&gt;
                &lt;li&gt;&lt;a href="contact.php"&gt;contact&lt;/a&gt;&lt;/li&gt;
          &lt;/ul&gt;
            &lt;div id="slogan"&gt;
                &lt;p&gt;&lt;/p&gt;
            &lt;/div&gt;
        &lt;/div&gt;
        &lt;div id="header_bottom"&gt;
            &lt;h2&gt;Think outside of the box!&lt;/h2&gt;
            &lt;p&gt;Registering with Global Auto Parts means you have access to super-fast online orders and total user customization, so you wont have to wait in a line again!&lt;/p&gt;
        &lt;/div&gt;  
        &lt;div id="maincontent"&gt;
            &lt;div id="left"&gt;
                &lt;h2&gt;&lt;a href="#"&gt;Register to become apart of the global community!&lt;/a&gt;&lt;/h2&gt;
                &lt;p&gt;&lt;?php
echo "&lt;h1&gt;Registration Page.&lt;/h1&gt;";
$submit = $_POST['submit'];


//form data
$fullname = strip_tags($_POST['fullname']);
$username = strtolower(strip_tags($_POST['username']));
$password = strip_tags($_POST['password']);
$repeatpassword = strip_tags($_POST['repeatpassword']);
$date = date("Y-m-d");
$email = $_POST['email'];

if ($submit)
{

     //open database
     $connect = mysql_connect("localhost","root","");
                mysql_select_db("phplogin"); //select database

     $namecheck = mysql_query("SELECT username FROM users WHERE username='$username'");
     $count = mysql_num_rows($namecheck);

     if  ($count!=0)

     {
       die("Username already taken! Go &lt;a href='register.php'&gt;back&lt;/a&gt; to try again?");

     }

     // check for existence
     if($fullname&amp;&amp;$username&amp;&amp;$password&amp;&amp;$repeatpassword)
     {


       if ($password==$repeatpassword)
       {

               //check char length of username and fullname
               if (strlen($username)&gt;25||strlen($fullname)&gt;25)
               {
               echo "Length of username or fullname is too long!";


               }

               else{
               //check password length
               if (strlen($password)&gt;25||strlen($password)&lt;6)
               {
               echo "Password must be between 6 and 25 characters";
               }
               else{
               //register the user!

               // encrypt password
       $password = md5($password);
       $repeatpassword = md5($repeatpassword);


                  //generate random number for activation process
                  $random = rand(23456789,98765432);
                $queryreg = mysql_query("

                INSERT INTO users VALUES ('','$fullname','$username','$password','$email','$date','$random','0')

                ");

                $lastid = mysql_insert_id();


                //send activation email
                ini_set("SMTP",$server);
                $to = $email;
                $subject = "Activate your account!";
                $headers = "From: Global Auto Parts";
                $server = "localhost";





                $body = "

                Hello $fullname,\n\n

                You need to activate your account with the link below:

                http://localhost/globalautoparts/activate.php?=$lastid&amp;code=$random \n\n


                Thanks.

                ";

                //function to send mail
                mail($to, $subject, $body, $headers);

                die("You have been registered! Check your email to activate your account!");
               }


               }
       }
       else
       echo "Your passwords do not match!";

     }
    else
        echo "Please fill in &lt;b&gt;all&lt;/a&gt; fields!";




}

?&gt;

&lt;html&gt;
&lt;p&gt;
&lt;form action='register.php' method='POST'&gt;
      &lt;table&gt;
             &lt;tr&gt;
                 &lt;td&gt;
                 Your full name:
                 &lt;/td&gt;
                 &lt;td&gt;
                 &lt;input type='text' name='fullname' value='&lt;?php echo $fullname; ?&gt;'&gt;
                 &lt;/td&gt;
             &lt;/tr&gt;
             &lt;tr&gt;
                 &lt;td&gt;
                 Choose a username:
                 &lt;/td&gt;
                 &lt;td&gt;
                 &lt;input type='text' name='username' value='&lt;?php echo $username; ?&gt;'&gt;
                 &lt;/td&gt;
             &lt;/tr&gt;
             &lt;tr&gt;
                 &lt;td&gt;
                 Choose a password:
                 &lt;/td&gt;
                 &lt;td&gt;
                 &lt;input type='password' name='password'&gt;
                 &lt;/td&gt;
             &lt;/tr&gt;
             &lt;tr&gt;
                 &lt;td&gt;
                 Repeat your password:
                 &lt;/td&gt;
                 &lt;td&gt;
                 &lt;input type='password' name='repeatpassword'&gt;
                 &lt;/td&gt;
             &lt;/tr&gt;
             &lt;tr&gt;
                 &lt;td&gt;
                 Email:
                 &lt;/td&gt;
                 &lt;td&gt;
                 &lt;input type='text' name='email'&gt;
                 &lt;/td&gt;
             &lt;/tr&gt;
      &lt;/table&gt;
      &lt;br /&gt;
      &lt;p&gt;
      &lt;input type='submit' name='submit' value='Register'&gt;
&lt;/form&gt;
&lt;/p&gt;
            &lt;/div&gt;  
            &lt;div id="right"&gt;
                &lt;div id="searchform"&gt;
                    &lt;form method="post" action="#"&gt;
                        &lt;p&gt;&lt;input type="text" name="search" class="search" value="Search Keywords" /&gt;&lt;input type="submit" value="GO" class="submit" /&gt;&lt;/p&gt;
                    &lt;/form&gt;
                &lt;/div&gt;
                &lt;p&gt;

                &lt;html&gt;

&lt;form action='login.php' method='POST'&gt;

    Username: &lt;input type='text' name='username'&gt;&lt;br /&gt;&lt;br /&gt;
    Password: &amp;nbsp;&lt;input type='password' name='password'&gt;&lt;br /&gt;&lt;br /&gt;
    Click &lt;a href='register.php'&gt;here&lt;/a&gt; to register. &lt;input type='Submit' value='Login' id="login"&gt;

&lt;/form&gt;    &lt;p&gt;




















                &lt;/p&gt;
                &lt;br /&gt;

            &lt;/div&gt;
        &lt;/div&gt;
        &lt;div id="footer"&gt;
            &lt;p&gt;&amp;copy; Copyright 2011 &lt;a href="#"&gt;Global Autoparts&lt;/a&gt;&amp;nbsp;&amp;nbsp;Design: Victor Gatto  &lt;/p&gt;
        &lt;/div&gt;
    &lt;/div&gt;
&lt;/body&gt;

&lt;/html&gt;
&lt;!--REGBOX--&gt;
</code></pre>
