TYPO3 Core

System requirements in file INSTALL.md list PHP >5.5 up to 5.6 (greater than version 5.5).
Quote:

The minimum system requirements for running TYPO3 CMS 7 are:

* Webserver capable of running PHP applications (Apache, Nginx, IIS or other)
* PHP >5.5 up to 5.6
* MySQL 5.5 up to 5.6 or compatible (no "strict mode", see below)
* more than 200 MB of disk space

However, a little bit further down in the same file, "PHP version 5.5 or later" is mentioned, which also matches with other resources such as t3o Download Page and t3o System Requirements Page

I assume, the line should read: PHP 5.5 up to 5.6 (without the greater-than-sign).