Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:49180
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain schlueters.de from 217.114.211.66 cause and error)
To: Ferenc Kovacs <info@tyrael.hu>
Cc: PHP Internals <internals@lists.php.net>
In-Reply-To: <AANLkTi=kr_mtWZrDya2BVc2NZxSYXEr5-e=NTerwQXQ9@mail.gmail.com>
References: <AANLkTin8n1Fo-ORfumyj+JzSyAAKoU39ZTjhmjcnwuKu@mail.gmail.com>
	 <1280440681.10693.5.camel@guybrush>
	 <AANLkTi=kr_mtWZrDya2BVc2NZxSYXEr5-e=NTerwQXQ9@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Date: Fri, 30 Jul 2010 00:49:28 +0200
Message-ID: <1280443768.10693.13.camel@guybrush>
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] --enable-zend-multibyte
From: johannes@schlueters.de (Johannes =?ISO-8859-1?Q?Schl=FCter?=)

Hi,

On Fri, 2010-07-30 at 00:33 +0200, Ferenc Kovacs wrote:
> > Ignoring the BOF might cause not expected behavior: Assume people are
> > using PHP as "templating" language and want the BOM to go out to the
> > client.

> Do you think that this is a common scenario?
> Apart from a case, when I had to create utf-8 csv files for Microsoft
> Excel, I never needed to send BOM from php, and for that particular
> case, I sent it with an explicit echo, not with an "invisible" control
> sequence in my code.

Well, PHP doesn't change what is written outside <?php ?> (*) so hiding
"random" bytes (PHP doesn't know what these bytes mean, PHP only knows
collections of bytes as strings with no further logic) might easily
break expectations and cause problems which are harder to trace down
than a "headers already sent" error which is relatively verbose.

johannes

*) Yes there is one behavior which might be seen as an exception: If ?>
is directly followed by a new line the new line is dropped, but then the
new line can be seen part of the ?>.

Example:

a<?php
?>
b

Prints

ab

without line break.