PHP will not work on 16 bit platforms such as Windows 3. 1 and sometimes we refer windows 7 optionalfeatures.exe the supported Windows platforms as Win32. 2003 are no longer supported as of PHP 5.
2000 are no longer supported as of PHP 5. If you have a development environment such as Microsoft Visual Studio, you can also build PHP from the original source code. Once you have PHP installed on your Windows system, you may also want to load various extensions for added functionality. CGI executable that can be used when running PHP on IIS via CGI or FastCGI.