I followed the tutorial on phpdoc.org: http://phpdoc.org/docs/latest/getting-started/installing.html#system-requirements. The phpdoc.org documentation isn’t exactly a beginners tutorial, so I wrote this tutorial for my self and others benifits CentOS Server is used in this tutorial! Requirements are PHP 5.3.3 Intl extension for PHP Graphviz To check for your PHP version, type the following in SSH: To install Intl extension for PHP, type …