Download Fedora Repo
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
Install repo
rpm -Uvh epel-release-*.rpmInstall php-mcrypt
yum -y install php-mcrypt
Install php-mcrypt CentOS 6
StandardDownload Fedora Repo
Install repo