Installing php-mcrypt in CentOS 6

For x86_64:

#rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

For i386:

#rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm

After install EPEL repo:

#yum install php-mcrypt

Check list of PHP add-on that install in server:

 #yum list installed | grep php | cut -d' ' -f1

Source :

http://blog.hostonnet.com/installing-php-mcrypt-in-centos-6