• The MicroPHP Manifesto (Ed Finkler)
• Get Some Rest: Best RESTful API Practices (Lorna Mitchell)
• Daemonizing PHP (Andy Blyler)
• A Stitch In Time Saves Nine: Solving the N+1 Problem (Paul Jones)
• Social Commerce with magento and Open Graph (John Jawed)

There's lots more on the list too, so check out the full list for the PHP track at this year's event! OSCON is being held July 16-20th in Portland, Oregon. For more information on tickets see this page on the conference site.