"PHP versions built with VC9 or VC11 (Visual Studio 2008 and 2012). Includes performance and stability improvements.
To Use VC9 builds you must have Visual C++ Redistributable for Visual Studio 2008 SP1 x86 or x64 installed.
To Use VC11 builds you must have Visual C++ Redistributable for Visual Studio 2012 x86 or x64 installed."
PHP with Apache/Windows
Use Apache builds found at the http://apachelounge.com/.
They also provide VC11 builds of Apache for x86 and x64. We use their binaries to build the Apache SAPIs.
If you are using PHP with Apache 1 or Apache2 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 VC9+ versions of PHP with the apache.org binaries.
With Apache you have to use the Thread Safe (TS) versions of PHP.