How to upgrade PHP on web servers to the latest version?
Starting from POA 5.3 (Release Notes) PHP 5.3 is the default PHP version for NG Shared Hosting service; PHP 5.3 and ProFTPD may be installed and updated to NG web servers from native CloudLinux repository.
To upgrade PHP 5.3 to the latest version on NG Hosting web server just make sure that CloudLinux repositories are correctly configured on a server and update PHP using the command below:
# yum update php53
Note: starting from POA 5.5, it is also possible to configure 5.5, please refer to the corresponding section of the guide.