Check New Username

Question

On the redirect page, is there a way to display the username they're tryingto register with?
Say I try to register using "GreatOne", and it already exist, how do I display the name "GreatOne" on the redirect page?

Answer 1

Heya Brachole,
I am also assuming you're using php. This may not answer your question but it may help. You may bypass the redirect if the username already exists for visitors that have javascript enabled. It will show the username availability in the text field as the user types the desired username. There's a demo of what I'm talking about at http://DwFAQ.info/signup_demo.php with a link to show how it's done.
For server side validation to show the username in the redirect page if the chosen username already exists you would have to create a session variable for the text field of the username on the registration form then echo that session variable onto the redirect page. You would only need to create a session variable if your loaded more than one page after the registration form. This is because forms with method POST only carry the value to the next page and then they are destroyed. So if you wanted to carry the desired username to more than one page after the registration form then you would have to create a session variable for the POST value of the username field then echo the session variable to show the chosen username on the page. You'd do this by adding this to the page after the registration form:
<?php
session_start();
session_register("username");
$username = $_POST['username'];
?>
That will create a session variable named $username from the POST value of username on the registration form.
Then on any page you wanted to show the chosen username you'd put this code on the very first line:
<?php session_start();?>
That starts the session for the page.
Then put this wherever you want to show the chosen username:
Sorry <?php echo $_SESSION['username']; ?> already exists.
That echos the session variable onto the page.
If it's just one page after the registration form then the POST value is still active and you can echo the POST value onto the page. Your code would look something like this:
Sorry <?php echo $_POST['username']; ?> already exists.
Where username is the name for the form field on the registration page that contains the username.
Look at this page for more information on how to create a session variable http://kb2.adobe.com/cps/165/tn_16563.html
Hope that helps!