Description:
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As described in the documentation at: http://www.php.net/manual/en/configuration.file.php the file php.ini is loaded from Windows Registry as follows:

"[...] in order: HKEY_LOCAL_MACHINE\SOFTWARE\PHP\x.y.z\IniFilePath, HKEY_LOCAL_MACHINE\SOFTWARE\PHP\x.y\IniFilePath and HKEY_LOCAL_MACHINE\SOFTWARE\PHP\x\IniFilePath, where x, y and z mean the PHP major, minor and release versions."

a) The file resides in the path d:\php\5.2.8.
b) I use php5isapi.dll on IIS 6 on Windows 2003
c) I inserted this key in the registry as follows:

[HKEY_LOCAL_MACHINE\SOFTWARE\PHP\5.2.8]
"IniFilePath"="d:\php\5.2.8"

but it still doesn't work. phpinfo() reports the configuration path as C:\WINDOWS.

I guess either the documentation lacks of specific details about the registry settings or this 5.2.8 version ignores the registry settings.

For me it is important so that this setting should work because I intend to keep several versions of PHP in the future and I don't want to change the environment settings (Path or PHPRC).

Expected result:
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To load the php.ini from Windows Registry.

Actual result:
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It loads the php.ini from C:\Windows