Some people emailed me about a blog post I wrote some time ago about a dependency injection container done in PHP 5.3. I have published on Github the small version of it (Twittee), but not the "working" version.
Today, I took the time to publish it on Github. Pimple is a small dependency injection container, with all the features you need for a usage in real projects.
Feel free to use it, fork it, and enhance it for your next PHP 5.3 project.
And don't forget to give PHP 5.3 a try as the PHP core team has just published the third release candidate, and they hope to release the final version by the end of June.