Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:28567
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain users.sourceforge.net from 213.197.162.99 cause and error)
Message-ID: <41165.195.22.180.233.1174631341.squirrel@avilys.eik.lt>
In-Reply-To: <62.AB.06941.67833064@pb1.pair.com>
References:  <62.AB.06941.67833064@pb1.pair.com>
Date: Fri, 23 Mar 2007 08:29:01 +0200 (EET)
To: internals@lists.php.net
User-Agent: NaSMail/1.0
MIME-Version: 1.0
Content-Type: text/plain;charset=utf-8
Content-Transfer-Encoding: 8bit
Importance: Normal
Subject: Re: [PHP-DEV] String BC break \{$a}
From: tokul@users.sourceforge.net ("Tomas Kuliavas")

> Hi there,
> looking around quickly I couldn't find any documentation on the
> following change:
> $a = "foo"; echo "\{$a}";
>
> PHP 4.4.4: {foo}
> PHP 5.2.1: \{foo}
>
> I didn't check which exact version introduced this change. Some
> third-party code used this obscure construct and failed when migrating
> from PHP 4 to PHP 5.
>
> Was this intentional and if yes, should it be documented in
> http://www.php.net/manual/en/migration5.incompatible.php ?
>
> If this has been discussed before then I apologize.

It was changed in 5.1.0-5.1.1 versions.

According to PHP Manual (http://www.php.net/language.types.string) curly
brackets are not escaped with backslash. Escape worked in older PHP
versions. It does not work in 5.1.1+.

http://bugs.php.net/31341
http://bugs.php.net/35411