I think WordPress.com has changed my feed URLs. I had to resubmit them to both Planet MySQL and Planet PHP. I am not sure Planet PHP has picked it up yet. This is sort of a test post to see if it shows up. If not and you have contact with the Planet PHP guys (I have emailed and resubmitted my feed) can you let them know that my feed pickup URL is https://doughboy.wordpress.com/category/php/feed/? Thanks.
Planet PHP Feed dead?