berikut cara menginstall hhvm di centos 6.x.x

enable instal epel dan remi repository

install epel
rpm –import https://fedoraproject.org/static/0608B895.txt
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm &&

install remi (untuk bagian ini optional silahkan di install)

rpm –import http://rpms.famillecollet.com/RPM-GPG-KEY-remi &&
rpm -ivh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm &&

install priority
yum install yum-priorities -y