I am a beginner in PhP
I am running php an apache server

Is this code correct? Is there a config problem I dont know about?

<?php
echo "$username";
?>
when I go to http://myip/test?username=me
I should recive a page with "me" on it. but I get a blank page instead. why?

I'm a n00b, so this is a shot in the dark...

Try:

<?php
echo $_REQUEST['username'];
?>

Teddy's right. It has to do with global variables. Originally your method would have worked - because PHP automatically made all of your $_REQUEST, $_GET, $_POST etc items into normal variables.

Now you actually have to point to the array. (instead of just $PHP_SELF to get the name of your script - you need $_SERVER['PHP_SELF']).

As you've passed the username as a GET variable (in the URL - as opposed to a POST form) - you can refer to it as $_GET['username']. The $_GET is more specific (as you know the variable is being taken from the URL).

thanks, this worked fine.
I set the "global variables = on" to make MY code work..