how to retrieve URL Parameters

How do you retrieve URL parameters in a control?

I have a control written in SC that needs to retrieve the URL parameters.

The URL is formed like this:

control.php?Username=Name&ID=1234

thank you

Small sample from http://php.net/manual/en/reserved.variables.get.php <?php
echo 'Hello ’ . htmlspecialchars($_GET[“Username”]) . ‘!’;
?>

just use the $_GET[‘myvar’]. It’s just the standard php way.

thanks gbravi and aducom for the replies