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Setting & displaying Variables

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Hi,

Obviously, the issue is around the comments var. It works, but it 
doesn't and I'm hoping someone can explain why.

Both echo strlen($comments);  and   echo $comments;    throw a Notice 
about an undefined variable. But the variable "comments" HAS to have 
been defined in order for the two echo statements to work!
    The variable 'comments' is also in SESSION data, which will also get 
the same Notice of an undefined variable.

What the heck am I missing? Why do I get the undefined var in those two 
statements?

===================
<code>
echo strlen($_POST["comments"])."<br />"; //WORKS

$commments = $_POST["comments"]; // WORKS but not needed; done elsewhere 
too.

// echo strlen($comments);  // GETS Notice: Undefined variable: comments 
in C:\xampp\htdocs... and nothing displays.

echo $_POST["comments"]; // WORKS
//echo $comments;   // GETS Notice: Undefined variable: comments in C 
... and nothing displays.

</code>
===================

I'm obviously missing something here since it appears the var is set 
according to the 2 statements that do display what I expected. Can you 
straighten me out? I've had this happen before with other vars and it's 
always confusing.

TIA,

Twayne`

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Setting & displaying Variables Twayne <nobody@spamcop.net> - 2013-09-21 16:20 -0400
  Re: Setting & displaying Variables Jerry Stuckle <jstucklex@attglobal.net> - 2013-09-21 16:25 -0400
  Re: Setting & displaying Variables The Natural Philosopher <tnp@invalid.invalid> - 2013-09-21 21:29 +0100
  Re: Setting & displaying Variables Richard Damon <Richard@Damon-Family.org> - 2013-09-21 16:47 -0400
    Re: Setting & displaying Variables Twayne <nobody@spamcop.net> - 2013-09-22 16:47 -0400
      Re: Setting & displaying Variables Richard Damon <Richard@Damon-Family.org> - 2013-09-22 17:58 -0400
  Re: Setting & displaying Variables Richard Yates <richard@yatesguitar.com> - 2013-09-21 14:29 -0700
    Re: Setting & displaying Variables Twayne <nobody@spamcop.net> - 2013-09-22 16:54 -0400
    Re: Setting & displaying Variables Twayne <nobody@spamcop.net> - 2013-09-22 17:19 -0400
      Re: Setting & displaying Variables Richard Yates <richard@yatesguitar.com> - 2013-09-22 14:39 -0700
        Re: Setting & displaying Variables Twayne <nobody@spamcop.net> - 2013-09-23 19:54 -0400
  Re: Setting & displaying Variables "J.O. Aho" <user@example.net> - 2013-09-21 23:55 +0200
    Re: Setting & displaying Variables Twayne <nobody@spamcop.net> - 2013-09-22 16:57 -0400

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