…both via Keith;

PHP/SWF Charts – very impressive. Make sure you donate if you use it, especially for something commercial.

Backwards compatible cloning from PHP5 to 4. At some point gonna post some experiences with BC in more detail. There’s a few grey areas to be resolved, like that zend.ze1-compatibility-mode (off by default) setting which, right now, is candidate for renaming, based on my experiences. Something like;

# mystery_bug_mode = On

In fact it’s seems generally possible to live without zend.ze1-compatibility-mode and still preserve BC, depending on what your code was doing.

Note there’s Adam Trachtenberg’s Upgrading to PHP5 if you’re looking for help.