Bradley Holt is a co-director of the Northeast PHP conference and has spoken at SXSW Interactive, OSCCON, and CouchConf. He is also the author of this week's Refcard, which is an update to our existing PHP Refcard and covers some of the new features of PHP 5.4. After some edits and feedback from the development team at Engine Yard, the card's sponsor, this card should serve as a must-have reference for PHP developers.