note 21225 added to function.empty

I have a string variable with a list of variable names. How can I tell if those variables are empty or not? I couldn't find any combination of eval/empty code that would let me do this... Ex: The variable rq is set to "field1,field2,field3". I want code to determine whether field1, field2, or field3 are empty. -- http://www.php.net/manual/en/function.empty.php http://master.php.net/manage/user-notes.php?action=edit+21225 http://master.php.net/manage/user-notes.php?action=delete+21225 http://master.php.net/manage/user-notes.php?action=reject+21225