in reply to Re: Re: Creating a login page
in thread Creating a login page
As japh said, you forgot the line:
which generates a CGI object stored in $query. From then on, you can call methods (header() and such) on the object, while the object knows it's a CGI object (package CGI, and thus knows to find those methods in the CGI module.
my $query = CGI::new;
If you forget to initialize the object, you'd be trying to call methods on an undefined value, which doesn't belong to a package, simply because it's undefined.