if($var) vs. if(isset($var))

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To: PHP <php-general@xxxxxxxxxxxxx>
Subject: if($var) vs. if(isset($var))
From: Sam Smith <php@xxxxxxxx>
Date: Tue, 23 Nov 2004 05:22:30 -0800
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What's the difference between:

if($var)

and

if(isset($var))

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Follow-Ups:
- Re: if($var) vs. if(isset($var))
  - From: John Nichel
- RE: if($var) vs. if(isset($var))
  - From: Vincent Jansen

References:
- RE: $_POST['xxx'] = "blabla" ?
  - From: Jay Blanchard

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