2012/2/14 Adi Mutu <adi_mut...@yahoo.com> > Perhaps i didn't explain correctly, my bad, sorry. > Basically what I want to see is the corresponding C code which is > executed, i could put a break in gdb, but how do I know at which C function > to put it, if i don't know the internals of php very good? >
And the answer is : you cant. Simply put, you have to study the code first, before knowing through which line it will go. That's not very easy, as you can count on ~800.000 lines in trunk. To see the path, use valgrind + callgrind. You'll get a very cool graph like this : http://julien-pauli.developpez.com/tutoriels/php/internals/presentation/images/PHPInternals-callgraph.png You could use gdb with the .gdbinit from trunk. Using it with CDT is much more cool as it is GUI. I wrote some article about PHP internals, mainly describing how it works. It's in french ( http://julien-pauli.developpez.com/tutoriels/php/internals/presentation) with some schema. Mainly, the hardest part is ZendVM. If you dont have to debug ZendVM, it's kinda "easy" and logic. Cheers Julien.Pauli > > ________________________________ > From: Ángel González <keis...@gmail.com> > To: Adi Mutu <adi_mut...@yahoo.com> > Cc: PHP Developers Mailing List <internals@lists.php.net> > Sent: Tuesday, February 14, 2012 1:11 AM > Subject: Re: [PHP-DEV] how to debug a php script ( the C code beneath it) > > On 13/02/12 21:48, Adi Mutu wrote: > > Hello, > > > > Perhaps this is a stupid question, but i haven't coded in C in years and > i'm not very familiar with development/debugging tools. If I have a php > script say 20 lines, > > How can I see a path of the corresponding C code which is executed? What > If i would like to break at a certain php line in the script, is it > possible? > > > > Thanks, > Why do you want to do it? > It looks to me like that you are trying to solve a problem the hard way > by doing that. >
