. Fixed bug #55509 (segfault on x86_64 using more than 2G memory). (Laruence)
. Fixed bug #55504 (Content-Type header is not parsed correctly on
HTTP POST request). (Hannes)
+ . Fixed bug #55475 (is_a() triggers autoloader, new optional 3rd argument to
+ is_a and is_subclass_of). (alan_k)
. Fixed bug #52461 (Incomplete doctype and missing xmlns).
(virsacer at web dot de, Pierre)
. Fixed bug #55366 (keys lost when using substr_replace an array) (Arpad)