Cacher is the code snippet organizer for pro developers

http://techglimpse.com/install-upgrade-php55-yum/

http://www.lophost.com/tutorials/how-to-enable-drupal-clean-url-on-a-centos-redhat-server/
http://how2linux.net/2015/01/12/install-php-zend-opcache-config-centos
http://www.stevejenkins.com/blog/2011/08/how-to-install-apc-alternative-php-cache-on-centos-5-6/
http://pecl.php.net/package/ZendOpca
http://kb.acenet.us/How_to_Install_APC_on_CentOS_6
yum install php-pear
https://www.mojowill.com/geek/howto-install-php-5-4-5-5-or-5-6-on-centos-6-and-centos-7/

https://webtatic.com/packages/php56/
http://www.tecmint.com/install-apache-mysql-php-on-redhat-centos-fedora/
http://www.tecmint.com/install-lamp-in-centos-7/
http://www.tecmint.com/install-apc-alternative-php-cache-in-rhel-centos-fedora/