Renaming Functions during runtime in PHP

Question

In PHP 5.3 is there a way to rename a function or "hook" a function.

There is the rename_function() within "APD" which has been broken since ~2004. If you try and build it on PHP 5.3 you'll get this error:

'struct _zend_compiler_globals' has no member named 'extended_info'

This is a really easy error to fix, just change this line:

GC(extended_info) = 1;

to

CG(compiler_options) |= ZEND_COMPILE_EXTENDED_INFO;

I modified my php.ini and the APD shows up in my phpinfo() as it should. However when i call rename_function() the PHP page doesn't load and I get a segmentation fault in my /var/log/apache2/error.log.

Is there anyway to fix APD to work with a modern version of PHP? Or is there another method to rename functions? Why on earth is vital feature not in php!??!?! (Gotta love python :)

Mordent

I know this question is a bit old, but can you show me your code? – Flowered

@Flowered as far as I know none of this works any more. – Mordent

I got APD to work. So maybe I can help you... – Flowered

@Flowered so wait, does rename_function() work on php 5.3.8? – Mordent

I think I only tried 5.3.6 (current version in ubuntu afaik) – Flowered

Answer 1

The up-to-date runkit extension can be found on http://github.com/zenovich/runkit It supports all contemporary versions of PHP released for the time being (from 4.4 to 5.4+). This runkit is official and supported.

Sincerely, Dmitry Zenovich

Intrigue

Thank you! This is a useful extension. – Mordent

Answer 2

Runkit trunk is 5.3+ compatible.

svn checkout http://svn.php.net/repository/pecl/runkit/trunk runkit
cd runkit
phpize
./configure
make && make install

Add extension=runkit.so to php.ini (or runkit.ini in conf.d)

In order to use runkit_function_rename() you will also have to recompile php with the --enable-maintainer-zts configuration flag. (Damn you zend!)

Quinate

Answer 3

I realize this question is a bit old, but I was recently looking for a way to rename functions for testing and ran into similar difficulties with APD.

Finally hit on the right Google query and found another option: Sebastian Bergmann's test_helpers extension -- it has its own rename_function() that seems to work just fine, as well as some other handy helpers for intercepting and mocking things.

Bonus - a relatively painless install process:

$ pear channel-discover pear.phpunit.de
$ pecl install phpunit/test_helpers

And then add extension=test_helpers.so to your php.ini

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