#!/usr/bin/perl
use strict;
use warnings;

my $whatever;

if($whatever) {
   my $something = "here";
}
else {
   my $something = "there";
}

print "look I compiled $something\n";

__END__

Global symbol "$something" requires explicit package name (did you forget to declare "my $something"?) 
at Monks\Badcode.pl line 14.
Execution of Monks\Badcode.pl aborted due to compilation errors.

Process completed with exit code 255