A highly interesting feed I’ve been following the past few days is PHP Advent, a set of articles released each day during the advent (just like 24ways, but then PHP related).
Highly recommended articles are First Class APIs (a method I suggest all my students to use when building an advanced project), Bits and PHPieces (that token_get_all() function surely looks interesting!), Code for Today (how I wrote GowallaMILF, which is being refactored right now), Streams (didn’t know these existed), Debugging (praising XDebug and providing a way to get a strack trace from closures), etc.