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Date: Mon, 11 Nov 2013 06:32:43 +0900
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To: Stas Malyshev <smalyshev@sugarcrm.com>
Cc: "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=001a11c34b7c79091b04ead95d5e
Subject: Re: [PHP-DEV] Re: [RFC] Comparison and conversion inconsistency -
 need more info
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

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Hi Stas,

On Mon, Nov 11, 2013 at 6:17 AM, Stas Malyshev <smalyshev@sugarcrm.com>wrote:

> > TRUE always evaluated as 1. I guess I've checked this behavior and made
> > wrong assumption
> > FALSE/NULL is always evaluated as 0, but it's not.
>
> True is not evaluated as 1, 1 is evaluated as true. When you compare
> with bool, other side is converted to bool. Which is described in the
> manual :) Try the same with -17, you'd get the same result, since -17 is
> bool-eanized as true.


bool or null anything Convert to bool, FALSE < TRUE

I was reading null gets converted to bool, but it's on both ops.
It's surprising to me that I've never bitten by this misunderstanding :(

Thank you for your time.

--
Yasuo Ohgaki
yohgaki@ohgaki.net

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