Those are two different variables! The first is a lexical (my) variable, scoped to the file. The second is the package (our) variable $main::showPUV.

Just a side note really, but our variables are somewhat lexically scoped.
Actual package scoped variables are declared with use vars.

Actually, they're lexically scoped symbol table entries, since this is perfectly valid: 
{
  our $var = 10;
  
  {
    package Other;
    our $var = 20;
    print "$var\n";
  }
  
  print "$var\n";

}

# no $var out here

[download]
But I think it's best not to do these sort of things.


acid06
perl -e "print pack('h*', 16369646), scalar reverse $="

In reply to Re^2: problem with global variables going out of scope by acid06
in thread problem with global variables going out of scope by Kelly Grant

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.