Hi,
You can do this by adding the "remi repository" with the following commands.
[root@localhost ~]# wget
http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
[root@localhost ~]# wget
http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
[root@localhost ~]# rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm
[root@localhost ~]# vim /etc/yum.repos.d/remi.repo
edit the following line
enabled=0 to enabled=1
[remi]
name=Les RPM de remi pour Enterprise Linux 6 - $basearch
#baseurl=http://rpms.famillecollet.com/enterprise/6/remi/$basearch/
mirrorlist=http://rpms.famillecollet.com/enterprise/6/remi/mirror
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
Now you can perform the update using the following command:
[root@localhost ~]# yum update