Install mcrypt on RHEL 6 64 bit

Use this link

http://dl.fedoraproject.org/pub/epel/6/x86_64/   

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/php-mcrypt-5.3.3-1.el6.x86_64.rpm
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/libmcrypt-2.5.8-9.el6.x86_64.rpm


 rpm -Uvh php-mcrypt-5.3.3-1.el6.x86_64.rpm libmcrypt-2.5.8-9.el6.x86_64.rpm