. Added FilesystemIterator. (Marcus)
. Added GlobIterator. (Marcus)
. Added SplHeap, SplMinHeap, SplMaxHeap, SplPriorityQueue classes. (Etienne)
+ . Added new parameter $prepend to spl_autoload_register(). (Etienne)
+ . Added FastArray. (Etienne, Tony)
- Added ReflectionProperty::setAccessible() method that allows non-public
property's values to be read through ::getValue(). (Derick)
- Added ability to use Traversable objects instead of plain arrays in ext/soap.