Does ASP have an equivalent for ISSET (php)?

[jamiec]

Hi

Does anyone know if ASP has the equivalent of ISSET in PHP.

eg. below:

It just basically says if a variable IS SET do something...

<?php 
    if (isset($userName))
        print "Welcome " . $userName . "<br>";
    else
        print "You are not logged in <br>";
?>

Thanks in advance...

[asp_funda]

There isn't an inbuilt function like isset() but you can use Marcus' function isBlank() which you can have at http://www.sitepoint.com/forums/show...4&postcount=13