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To: =?UTF-8?Q?P=C3=A1draic_Brady?= <padraic.brady@gmail.com>
Cc: Stas Malyshev <smalyshev@sugarcrm.com>, 
	"internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=001a11c36402070ed604f187df70
Subject: Re: [PHP-DEV] [RFC] Improve HTML escape
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

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Content-Type: text/plain; charset=UTF-8
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Hi Padraic,

On Mon, Feb 3, 2014 at 8:06 PM, P=C3=A1draic Brady <padraic.brady@gmail.com=
>wrote:

> There are three ways to present an attribute value validly in HTML5:
>
> 1. Double quoted
> 2. Single quoted
> 3. Unquoted.
>

Unquoted is really bad standard with respect to security. I don't
understand why
they allow unquoted attributes, but I think we need to address this some
how.

htmlentities/htmlspecialchars may have ENT_NO_SPACE as an option. If
there is space char, null string is returned. Standard allows space before
attributes. User may write

<tag attr =3D   <?php echo htmlentities($str, ENT_NO_SPACE);?> >

Use of this option is not recommended,  but there is the standard. We may
support it even if we don't recommend it.

Regards,

--
Yasuo Ohgaki
yohgaki@ohgaki.net

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