yum install epel*
yum update / yum upgrade
CentOS and Red Hat Enterprise Linux 6.x
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm
CentOS and Red Hat Enterprise Linux 7.x
wget http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
rpm -Uvh remi-release-7*.rpm
yum update / yum upgrade
yum --enablerepo=remi,remi-php56 update
yum --enablerepo=remi,remi-php56 upgrade
php -v