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Date: Sun, 15 Jul 2007 03:01:17 +0200
To: "Rasmus Lerdorf" <rasmus@lerdorf.com>
Cc: "PHP Developers Mailing List" <internals@lists.php.net>
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References: <d8269d910707111543t3d8ea2a1ga38f8857a6836618@mail.gmail.com>
	 <469877B6.8010307@zend.com>
	 <d8269d910707140813g65f902eeo43ac7ba1e407b7a3@mail.gmail.com>
	 <4698F557.40006@lerdorf.com>
Subject: Re: [PHP-DEV] Apache handler with Multiple PHP versions
From: tijnema@gmail.com (Tijnema)

On 7/14/07, Rasmus Lerdorf <rasmus@lerdorf.com> wrote:
> Tijnema wrote:
> > On 7/14/07, Stanislav Malyshev <stas@zend.com> wrote:
> >> > The Apache2handler SAPI should be loaded first, and read the very
> >> > first line of the PHP script to determine if a version is specified
> >> > there. If not, the handler needs to load its default PHP version. If
> >> > it is specified, it should try to load that version, and if it
> >> > couldn't find or load that version, fall back to the default version
> >> > and issue a warning.
> >>
> >> This means the engines would have to init/shutdown on each request,
> >> which makes it as bad as CGI.
> > Is that really a big problem?
>
> If you care at all about performance, yes.

Well, I do, because if I don't, it won't be accepted anywhere.

>
> > And isn't that what Apache currently does?
>
> No, of course not.  The whole point of the Apache module version of PHP
> is to keep PHP in memory across requests and only call the MINIT and
> MSHUTDOWN hooks on server startup and shutdown.

Thank you for your very short manual on Apache Module. So, the only
way I can implement this (without the performance hit), is by loading
all PHP version at once at startup of apache, which will increase
startup time, but that shouldn't be a problem. A more worrysome thing
is the memory usage, I don't think that in the code is described how
much memory it takes to load and startup PHP, can you give an
estimate?

>
> Not to sound too elitist here, and this is directed just at you
> personally, but if you are going to post to the internals list, you
> should have some notion of how PHP works internally.  We don't mind
> people who don't work on the code posting here occasionally, but please
> keep in mind that it is our primary means of communicating amongst the
> people working on the code and lately it has gotten a bit hard to pick
> out the useful stuff from the chatter.
>
> -Rasmus
>

Thank you for clarifying the intention of this list, as I had another
intention of it. So, I'll start studying (docs of) the code soon. I
think it would be the best to actually work with the core too, so I
think I'll just start to implement this idea while learning how
everything works.

Tijnema