WordPress autofill form with user name

Question

I have a WordPress site with forms on it. I am trying to autofill the name field in the form with the login name from WordPress. How can I do this? I tried some php get current user name but that did not work. Any help will be greatly appreciated.

<?php
//get current username
global $ current_user; 
$current_user=wp_get_current_user();
$cuname=$current_user-> user_name; ?>

// in the  form
value="<?php echo $cuname; ?>" read only

Answer 1

You have user_name when it should be user_login:

$cuname = $current_user->user_login