To install, first you must tell rpm to accept rpm’s signed by me, then add the yum repository information to yum:
rpm -ivh 404 Not Found
Now you can install php by doing:
yum --enablerepo=webtatic install php
Or update an existing installation of php, which will also update all of the other php modules installed:
yum --enablerepo=webtatic update php
If this does not work correctly, try disabling all other repositories while installing/updating, by adding the –disablerepo=* option. This will stop other dependencies from being installed, so you may want to install them first.
yum --disablerepo=* --enablerepo=webtatic update php