The PHPClasses.org site has release their latest "Lately in PHP" podcast episode today - a look at the performance improvements in PHP 5.4 and the external tools (extensions) you can use to make it even faster.

Despite PHP 5.4 was released some time ago, only now PHP caching extensions like eAccelerator and APC are being adapted to work with PHP 5.4. [...] They also discussed the latest PHP 5.4.5 and PHP 5.3.15 releases, the planned implementation of generators and the yield keyword in PHP 5.5, the usability problems of the current Web browsers, and the upcoming Indieconf 2012, the independent Web professionals conference.

You can listen to this latest episode in a few different ways - either through the in-page player, by downloading the mp3, by subscribing to their feed or by watching the video recording as done through a Google Hangout.