# yum install http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
# yum install http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
# yum list installed | grep php
# yum remove php*
# yum install --enablerepo=remi,remi-php56 php php-mbstring php-pdo php-gd php-mcrypt php-mysqlnd
# service httpd restart