[ Moved to the Fixing WordPress sub-forum. ]

Hi,
I would like to assign to my visitors the same role as a suscriber.
So they wont have to login.
If I could see visitors as a role. I could use User Role Editor Plugin to assign suscribers role.
I found this at google

<?php
global $user_login;
if( $user_login ) {
echo 'user logged in';
} else {
echo 'user not logged in';
}
?>

But don’t know where to put that code. I have a custom plugin that shows search results of schedules only to registered users. So I need assign role to visitors. I’ve been searching for hours.
Thanks!