test variable value?

["William Stokes" <kalles@xxxxxxxxxxxxx>]

Hello

What is the best way to determine if a variable has no value?

if ($var== '')

or

if ($var== 'null')


Can 'null' be used here?

Thanks
-Willa

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php