Open your terminal and EPEL Repo
wget http://epel.mirror.net.in/epel/6/i386/epel-release-6-8.noarch.rpm rpm -Uvh epel-release-6-8.noarch.rpm
Then Add Remi
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
Now open /etc/httpd/conf.d/phpMyAdmin.conf file and enter the address field with address from where you want access PhPMyAdmin remotely cause it is accessed by default from localhost only.
Next restart your httpd with
service httpd restart