Puttygen for windows 64 bit

If you are using PHP as FastCGI with IIS you should use the Non-Thread Safe (NTS) versions of PHP.

Apache

If you are using PHP as module with Apache builds from apache.org (not recommended) you need to use the older VC6 versions of PHP compiled with the legacy Visual Studio 6 compiler. Do NOT use VC11+ versions of PHP with the apache.org binaries.With Apache you have to use the Thread Safe (TS) versions of PHP.

VC11, VC14 & VC15

More recent versions of PHP are built with VC11, VC14 or VC15 (Visual Studio 2012, 2015 or 2017 compiler respectively) and include improvements in performance and stability.- The VC11 builds require to have the Visual C++ Redistributable for Visual Studio 2012 x86 or x64 installed- The VC14 builds require to have the Visual C++ Redistributable for Visual Studio 2015 x86 or x64 installed- The VC15 builds require to have the Visual C++ Redistributable for Visual Studio 2017 x64 or x86 installed

TS and NTS

TS refers to multithread capable builds. NTS refers to single thread only builds. Use case for TS binaries involves interaction with a multithreaded SAPI and PHP loaded as a module into a web server. For NTS binaries the widespread use case is interaction with a web server through the FastCGI protocol, utilizing no multithreading (but also for example CLI).

What is PGO?

Profile Guided Optimization is an optimization feature available in Microsoft's Visual C++ compiler that allows you to optimize an output file based on profiling data collected during test runs of the application or module.Links:

amd64 (x86_64) Builds

The x64 builds of PHP 5 for Windows are experimental, and do not provide 64-bit integer or large file support.PHP 7 provides full 64-bit support. The x64 builds of PHP 7 support native 64-bit integers, LFS, 64-bit memory_limit and much more.

Long and mulibyte path

PHP 7.1+ supports long and UTF-8 paths. See UPGRADING for details.