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Date: Fri, 13 Jul 2007 23:51:04 -0700
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Subject: PHP Source Code Help
From: uansari@yahoo.com ("Usman S. Ansari")

I am trying to debug my custom TCP stack which is running under Linux 
OS. Do to some bug in my stack or missing feature I am getting error 
following from php.

failed to open stream

Which I have traced to file: php-4.4.7/main/streams.c and function: 
_php_stream_open_wrapper_ex

        stream = wrapper->wops->stream_opener(wrapper, path_to_open, 
mode, options ^ REPORT_ERRORS,
                 opened_path, context STREAMS_REL_CC TSRMLS_CC);

Error condition occurs when stream is assigned NULL from 
wrapper->wops->stream_opener call (see above line). I need some help 
figuring out which function is call by pointer 
wrapper->wops->stream_opener. I tried putting debug statements in some 
functions which are called on pointers (based on different ops (read / 
write / flush operations, etc.), so far I have not hit a function 
pointed by wrapper->wops->stream_opener.

Also, if there is any documentation for understanding php source code.

Thanks

Usman
P.S. I know 4.4.7 is old php, but by system is setup with this version 
for debugging TCP stack (for some reason)