This tutorial guides step-by-step on how to install most recent/most updated versions of a regular PHP stack. This comprises PHP 5.5 with OpCache, Percona 5.6 server and Google PageSpeed for Apache HTTPD

1. Import needed repo for PHP 5.5:[bash]rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
   rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
   [/bash]
2. Install PHP 5.5 and related softwares:[bash]yum –enablerepo=remi,remi-php55 install httpd php php-common
   yum –enablerepo=remi,remi-php55 install php-opcache php-pecl-memcache php-pecl-memcached[/bash]
3. Install Mod PageSpeed for Apache HTTPD
4. Install Percona 5.6 server:[bash]rpm -Uhv http://www.percona.com/downloads/percona-release/percona-release-0.0-1.x86_64.rpm
   yum install Percona-Server-client-56 Percona-Server-server-56 Percona-Server-share-compat[/bash]
5. Start services:[bash]service httpd start
   service mysql start[/bash]
6. Also install phpMyAdmin for easy mysql db management:[bash]yum –enablerepo=remi,remi-php55 install phpmyadmin[/bash]
7. In case using virtualmin / webmin, be sure to create an alias of mysql service so that we can control mysql server from webmin:[bash]cd /etc/rc.d/init.d/
   ln -s mysql mysqld[/bash]