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Date: Thu, 26 Apr 2012 16:09:18 +0200
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To: Christian Stocker <christian.stocker@liip.ch>
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Subject: Re: [PHP-DEV] Extension versions
From: j.boggiano@seld.be (Jordi Boggiano)

On 26.04.2012 15:50, Christian Stocker wrote:
> dom has the version 20031129 which is greater than 5. Not sure if anyone
> really checks against that, since not much changed there since obviously
> 2003 ;)

Yup it's the only one I noticed but since it's fairly well established,
usually you don't need to check if it's there (AFAIK).

> But the problem with extensions like dom is the used libxml version
> which actually causes problems, not the version of the extension itself.
> There's a bug in libxml < 2.7.0 which can hit you hard for certain
> namespaces. So getting just the version number won't help you here.
> 
> But that's not something we have to take care of IMHO, one can get that
> information with LIBXML_VERSION or LIBXML_DOTTED_VERSION

True, and maybe we should actually expose libxml and other bundled libs
as packages too via Composer. Could be handy.

Cheers

-- 
Jordi Boggiano
@seldaek - http://nelm.io/jordi