Following is the instructions to upgrade your Dedicated Server’s PHP from version 5.3 to 5.5 on DirectAdmin platform: Step 1: ssh to the server Step 2: Enter following commands: #cd /usr/local/DirectAdmin/custombuild #./build set php5_ver 5.5 #./build update #./build php n #services httpd restart Once it’s done, confirm the upgrade by: #php -v