Under the section that looks like [remi] make the following changes:
[remi]
name=Remi's RPM repository for Enterprise Linux 6 - $basearch
#baseurl=http://rpms.remirepo.net/enterprise/6/remi/$basearch/
mirrorlist=http://rpms.remirepo.net/enterprise/6/remi/mirror
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
Also, under the section that looks like [remi-php55] make the following changes:
[remi-php56]
name=Remi's PHP 5.6 RPM repository for Enterprise Linux 6 - $basearch
#baseurl=http://rpms.remirepo.net/enterprise/6/php56/$basearch/
mirrorlist=http://rpms.remirepo.net/enterprise/6/php56/mirror
# WARNING: If you enable this repository, you must also enable "remi"
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
Type CTRL-O to save and CTRL-X to close the editor
3. Upgrade PHP 5.3 to PHP 5.6
Now we can upgrade PHP. Simply type in the following command:
yum -y upgrade php*
Once the update has completed, let’s verify that you have PHP 5.6 installed: