Besides the usual fun times and great sessions that happened at this year's php|tek, a group was formed with a single (complicated) purpose - defining some development standards for PHP frameworks/applications. Cal Evans (of Ibuildings) was able to sit in on the first meeting of this group. Here's some of his observations:
This group was not my idea and it's only by a quirk of fate that I was even at the meeting. As far as I can tell, the group was formed when representatives of several of the major PHP projects got together and decided that if they can find areas of cooperation within their own spheres of influence, it would be a win for all of them, and the PHP community at large. To paraphrase the goal of this group, we are saying "Hey, we are all agreeing that we are going to code this way and we'd like you to do it to."
He mentions some of the other members of the group - leaders of projects like CakePHP, Agavi, PEAR, the Zend Framework and Symfony. If you're interested in the group, you can check out their mailing list here and keep up with the latest discussion and decisions. The group isn't open for new members at this time.
The PHPClasses blog has also posted some comments on the subject.