Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

i need to know that what does VC stands for in the php version (VC9 x86 Non Thread Safe (2011-Nov-10 19:52:12) Regards.

share|improve this question
up vote 5 down vote accepted

To expand on the other (also correct) answers a little further, from

Which version (of PHP for Windows) do I choose?

If you are using PHP with Apache 1 or Apache2 from you need to use the VC6 versions of PHP.

If you are using PHP with IIS you should use the VC9 versions of PHP.

VC6 Versions are compiled with the legacy Visual Studio 6 compiler.

VC9 Versions are compiled with the Visual Studio 2008 compiler and have improvements in performance and stability. The VC9 versions require you to have the Microsoft 2008 C++ Runtime (x86) or the Microsoft 2008 C++ Runtime (x64) installed.

Do NOT use VC9 version with binaries.

Hope this helps.

share|improve this answer

that's Visual Studio. VC9 is Visual Studio 2008

share|improve this answer

I believe this refers to the compiler version. In this case, MS Visual Studio C/C++ version 9.

Visuall C++ wikipedia link

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.