At Oct-17 00:30:06UTC, they released PHP5.5.5.
According to ( ChangeLog ), it fixes about twenty bugs against PHP 5.5.4, some of them regarding the build system.
I downloaded a Thread Safe version php-5.5.5-Win32-VC11-x86.zip for my server (Windows7HP+SP1(x86)). It requires VC11. If you don’t have VC11 on your Windows, you must install vcredist_x__.exe before the PHP configuration.
The text in the file php.ini-production is no changed except adding a comment line “; This is php.ini-production INI file.”.
As the official PHP binary includes php5apache2_4.dll, I extract the zip archive and replace all PHP5.5.4 files with all PHP5.5.5 files except my php.ini. Then, I restart my Apache. That’s it.
If you need how to configure PHP5.5, please see the post. It is for a mbstrings user, but the information gives some help for you.