in reply to Variable behaving as a function call

Try 
   
$time_zone_func = sub {gmtime()};
# then
print $time_zone_func->();
# or
print &$time_zone_func;

[download]

Though in this case a normal named function seems to be the easiest approach.

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

In Section Seekers of Perl Wisdom