At my work place, we use PHP and CodeSniffer hooked up in Jenkins.
I liked the fact that PSR-1 and PSR-2 are approved by the committee.
The PSR0 standard is found at:
https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md
The PSR1 standard is found at:
https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-1-basic-coding-standard.md
The PSR2 standard is found at:
https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md
The PSR3 standard is found at:
https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
p.s. Kohana 3.3 has PSR-0 and the migration from 3.2 to 3.3 is quite tough for me. It requires a lot of refactoring on my side…