using'submit' in right places

adityakonda

Hi all,

I have written a piece of code which validates a username, to see if it is empty.

If it is empty, the user is given a simple message and an option to go back.

It is not empty, the user is given the option to proceed.

The problem i have here is that the options to 'go back' and 'proceed' appear, no matter what.

How can i split it so the right option appears for the right if statement.

Here is the code:

<html>
<?
$filter = @$HTTP_POST_VARS["filter"];

if(empty( $filter))
{
echo'<p align = Left class="error">Error</p>';
echo '<br />Please enter your username<br />';
}
?>

</html>

I have also attached how the image looks.

And, if possible how can i auto-direct the user instead of the user pressing the option'proceed'

Thank you.

Adi

matto

<?

$filter = $_POST['filter'];
$message = '';

if($filter == '')
  $message = '<p class="error">Please enter a username.</p>';
else // redirect to start page
 header("Location: startpage.php");

// start output

echo $message;

?>
<form method="post" action="<?=$_SERVER['PHP_SELF'] ?>">
Enter username: <input type="text" name="filter"><br />
<input type="submit">
</form>

note that this is what you wanted but it is not a secure solution.
startpage.php will be accessible directly even without a username given.
if you want to create a login page which protects your site, consider e.g. the use of sessions (and session variables) plus re-check for user credentials on every single page.

adityakonda

cheers mate,

Excellent tip, I will use it.

Thank you.

Adi