Why isn't the email address displaying???

[cturner]

When I test the following code to update the email address it shows a blank text field. Can someone please help me solve this problem? Thanks in advance.

[code]
if (isset($_POST['save'])) {
// get the email address
$email = $_POST['email'];
// get the current password
$currentpassword = $_POST['currentpassword'];
// get the new password
$newpassword = $_POST['newpassword'];
// get the
$newpassword2 = $_POST['newpassword2'];

if ($email == '') {
$arrErrors['email'] = 'You have deleted the email address please refresh the page to display the email address again.';
}
if (strlen($currentpassword) < 6) {
$arrErrors['currentpassword'] = 'Please enter a password that is 6 or more characters in length.';
}
if ((strlen($newpassword) > 6) AND ($newpassword2 == '')){
$arrErrors['newpassword2'] = 'Please enter the password again in the confirm new password field.';
}

if (count($arrErrors) == 0) {
$username = mysql_real_escape_string($_COOKIE['username']);
$email = mysql_real_escape_string($_POST['email']);
$currentpassword = mysql_real_escape_string($_POST['currentpassword']);
$newpassword = mysql_real_escape_string($_POST['newpassword']);
$newpassword2 = mysql_real_escape_string($_POST['newpassword2']);

$update = "UPDATE `users` SET `email` = '$email', `password` = '$newpassword' WHERE `username` = '$username'";
if (mysql_query($update)) {
header ('Location: updated.php');
} else {
print "Could not add the entry because: " . mysql_error() . ". The query was $result.";
}
} else {
        // The error array had something in it. There was an error.
        // Start adding error text to an error string.
        $strError = '<div class="formerror"><p>Please check the following and try again:</p><ul>';
        // Get each error and add it to the error string
        // as a list item.
        foreach ($arrErrors as $error) {
            $strError .= "<li>$error</li>";
        }
        $strError .= '</ul></div>';
    }
}
[/code]

[kalivos]

Where is $username set to a value?

[cturner]

The $username was in a different part of the page but I have now moved to the second lot of code that was displayed before.

Here it is:
[code]
require "config2.php";
// get the username
$username = $_COOKIE['username'];
$query = "SELECT * FROM `users` WHERE `username` = '$username'";
$result = mysql_query ($query) or die("Could not query because: " . mysql_error());
while($row = mysql_fetch_array($result)){
echo "<div align=left><table width=50%><tr><td>Username:</td><td>".$row['username']."</td></tr><tr><td>E-mail address:</td><td>";
echo "<input name=email type=text value=".$row['email']."></td></tr><tr><td>Current password:</td><td><input name=currentpassword type=password></td></tr><tr><td>New password:</td><td><input name=newpassword type=password></td></tr><tr><td>Confirm new password:</td><td><input name=newpassword2 type=password></td></tr><tr><td colspan=2></td></tr></table></div>";
}
mysql_close();
[/code]