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To: "Eric Stenson" <ericsten@microsoft.com>, "internals@lists.php.net"
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Date: Fri, 16 Mar 2012 19:49:56 +0100
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Subject: Re: [PHP-DEV] Q: ZEND_HANDLE_STREAM and wincache extension on PHP 5.4
From: glopes@nebm.ist.utl.pt ("Gustavo Lopes")

On Fri, 16 Mar 2012 16:52:39 +0100, Eric Stenson <ericsten@microsoft.com>  
wrote:

>
> Thank you, Gustavo!  Is Dmitry on the internals mailing list?

It's best you send him an e-mail to dmitry@zend.com

> I was talking with Pierre yesterday, and there was some question about  
> whether there was some distinction between streams that were created as  
> a result of zend_compile_file versus just those files that were called  
> by calling
> zend_stream_open_function.

What would this distinction be and what would be the implication?

Conceptually, comparing zend_compile_file and zend_stream_function is  
already a little fuzzy because they don't do the same thing;  
zend_compile_file has already been provided a zend_file_handle. What may  
make them comparable is that the zend_file_handle may be just a file name  
and so effectively the file will have to be opened by the  
zend_compile_file implementation (see also zend_stream_fixup).

>
> Does the phar extension make any distinction between when streams are
> opened?  Or, is it by virtue of only handling files that only end with
> extensions that aren't compiled that it's skipping the code in
> php_cgi!main()?

I think the reason phar causes no problem is because CGI will not be  
opening phar:// files as a first script, which is all php_cgi!main() deals  
with. So phar's zend_stream_function will in this case end up falling back  
on the default implementation and cause no problem.

In any case, it's true that default implementation of  
zend_stream_open_function (php_stream_open_for_zend_ex) does store a  
php_stream* in handle. However, this clearly isn't the general case (even  
it were, breaking the abstraction would already be dubious). This is  
definitely a bug.

-- 
Gustavo Lopes