What are some good podcasts on PHP and MySQL?
iBuildings TechPortal
An excellent podcast about PHP development. Most of the episodes are recordings from conference presentations.
http://techportal.inviqa.com/
I especially loved this episode: http://techportal.inviqa.com/2010/02/16/surviving-a-plane-crash-2/ where the developers of a Yahoo! like portal for the Netherlands talked about scalability and localization.
Podcasts that are about programming, but not exclusively PHP
Floss Weekly http://twit.tv/FLOSS
Where you can hear an interview from the inventor of PHP http://twit.tv/floss12
Software Engineering Radio http://www.se-radio.net/
Great, in depth, more than web programming topics (I learn about how big programming is)
Stackoverflow Podcast https://blog.stackoverflow.com/
Jeff and Joel cover some technical topics like proxy servers, scaling, server hardware, and how to move a turtle in the LOGO programing language. How do I move the turtle in LOGO? (look who asked the question)
NOTE: I answered this question and saw the duplicate reference to this question. I wanted to add the same answer to this question since it is floating to the top as the prime.