isset checks to see if the $a variable has been set, ie, if it exists.
if($a) checks for the truthood of $a, meaning, if it has a non-zero,
non-null/empty-string value, then its true, else, false.
jack
-----Original Message-----
From: David Yee [mailto:[EMAIL PROTECTED]]
Sent: Friday, September 14, 2001 6:04 PM
To: [EMAIL PROTECTED]
Subject: [PHP] if(isset($a)) vs if($a)
Hi. What is the difference between:
if(isset($a))
and
if($a)
??? Thanks.
David
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