v0.2.0 update to php-mf2 (BREAKING CHANGES) contains lots of goodness, including

• support for the new, safe, consistent e-* property parsing rules
• improved API, parsing mf2 from HTML now only requires one function call
• PSR-0 namespace update (mf2 → Mf2)
• improvements to the way classic microformats are supported
• vastly improved documentation

Go get it now from Packagist, or try it out at pin13.net/mf2