If you are getting "The program can't start because MSVCR100.dll is missing from your computer. Try reinstalling the program to fix this problem", it means you need to follow the installation instructions in the left column on "http://windows.php.net/download/":
"The VC11 builds require to have the Visual C++ Redistributable for Visual Studio 2012 x86 or x64 installed."
As the note there says, you can get it from: http://www.microsoft.com/en-us/download/details.aspx?id=30679
Migrating from PHP 5.4.x to PHP 5.5.x
Table of Contents
- What has changed in PHP 5.5.x
- Backward Incompatible Changes
- New features
- Deprecated features in PHP 5.5.x
- Changed Functions
- New Functions
- New Classes and Interfaces
- New Methods
- Other changes to extensions
- New Global Constants
- Changes to INI file handling
- Changes to PHP Internals
See also the migration guides for PHP versions 5.0.x, 5.1.x, 5.2.x, 5.3.x and 5.4.x.

Anonymous ¶
3 months ago