I installed the latest XAMPP for Windows (1.7.3) on Windows 7 Professional. My changes to php.ini didn't have any effect and therefore I looked at phpinfo and found something weird:
System Windows NT ZEUS 6.1 build 7600 ((null)) i586
Build Date Nov 20 2009 17:20:57
Compiler MSVC6 (Visual C++ 6.0)
Configure Command cscript /nologo configure.js "--enable-snapshot-build"
Server API Apache 2.0 Handler
Virtual Directory Support enabled
Configuration File (php.ini) Path no value
Loaded Configuration File (none)
Scan this dir for additional .ini files (none)
Additional .ini files parsed (none)
I can't figure out why no php.ini is loaded, even though the php.ini file is located in C:\xampp\php\php.ini. Any clues?