Calling original function from an overloaded function

Well, speaking in broad terms, I would suggest to store the pointer to
original function before overloading it, and calling that, when you
need it

I have been looking at xdebug and have figured out how to overload a
function. As a test I have overloaded the var_dump function.

Now how do I call the original var_dump function from my implementation?
Borrowing from OO terminology I have subclassed the var_dump method, now
I want to call parent::var_dump() from my subclass.

Also how does overloading work when two extensions overload the same
function? Can this be done? Is there some sort of order? Can I let the
other extension overload the function and then overload the function
from the other extension?

Any pointers would be greatly appreciated.

Thanks

Christoph

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Alexey Zakhlestin
http://blog.milkfarmsoft.com/

Christoph Dorn wrote:

I have been looking at xdebug and have figured out how to overload a
function. As a test I have overloaded the var_dump function.

Now how do I call the original var_dump function from my implementation?
Borrowing from OO terminology I have subclassed the var_dump method, now
I want to call parent::var_dump() from my subclass.

Also how does overloading work when two extensions overload the same
function? Can this be done? Is there some sort of order? Can I let the
other extension overload the function and then overload the function
from the other extension?

Any pointers would be greatly appreciated.

Hi,

phar does exactly what you're describing, this is all encapsulated in
func_interceptors.c:

http://cvs.php.net/viewvc.cgi/php-src/ext/phar/func_interceptors.c?revision=1.20.2.1&content-type=text%2Fplain&pathrev=1.20.2.1

Greg