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NNTP-Posting-Date: Mon, 19 Dec 2011 09:09:39 -0600
Date: Mon, 19 Dec 2011 10:09:39 -0500
From: bill <nobody@spamcop.net>
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Subject: empty - not empty()
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.php:4088

searching the manual gives lots of hits, none of which appear 
relevant (at least by the title).

I had the following code in a scheduling class:

if ($ptNum == "empty") {
	$ptNum = 0;
	$status= "e";
	}

I pass the string "empty" to the function as a patient number if 
we are creating an empty appointment slot.

now, this fails because with a patient number of 0 the if returns 
true.

I am aware of the function empty() that would work like that, but 
do not understand why the compare fails with the constant, "empty."

I fixed the function by making it a strict compare, but would 
like to know why the regular compare is true with the numeric 
value of zero.

bill