Description:
------------
win32\build\config.w32.h.in  file contains the following code:

/* Define the minimum supported version */
#undef _WIN32_WINNT
#undef NTDDI_VERSION
#define _WIN32_WINNT 0x500
#define NTDDI_VERSION  _WIN32_WIN2K

Now look at some Windows Platform SDK file, for example ShlObj.h:

#if (NTDDI_VERSION >= NTDDI_WIN2K)

you see that NTDDI_VERSION is compared to NTDDI_WIN2K, but NTDDI_WIN2K is defined in the following way:

#define NTDDI_WIN2K  0x05000000

So, macro NTDDI_VERSION defined in php config.w32.h equals to 0x500
, but compared to 0x05000000.

This is incorrect behavior and should be fixed.

Test script:
---------------
Schematic script:

#defined _WIN32_WINNT 0x500

#include "zend.h"
#include "ShlObj.h"

...
TCHAR ret[MAX_PATH + 1];
SHGetFolderPath(NULL, CSIDL_FLAG_CREATE, NULL, SHGFP_TYPE_CURRENT, ret);

Expected result:
----------------
NTDDI_VERSION is defined like:
#define NTDDI_WIN2K  0x05000000

OR

do not unset _WIN32_WINNT and NTDDI_VERSION if they are defined.