>type WWW.pm
package WWW;
sub www_func { print("woot!\n"); }
1;

>type Admin.pm
package Admin;
use base 'WWW';
www_func();
1;

>perl -e"use Admin"
Undefined subroutine &Admin::www_func called at Admin.pm line 3.
Compilation failed in require at -e line 1.
BEGIN failed--compilation aborted at -e line 1.