package variables are global, which means visible everywhere.
Close — fully-qualified names are visible everywhere, but most "global" variables are implicitly scoped to the current package.
File-scoped lexicals are still lexically-scoped. They aren't seen outside the file.
If a 1:1 correspondence between files and packages (as is convention) is maintained, those are equivalent, with the exception that you can refer to a package "global" variable from elsewhere if you specifically do so. In terms of "accidents", the risks for a package variable and file-scope lexical are very similar.
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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