how to install php5.3.x & 5.2.x centos

there are 3 steps how to install/upgrade php on centos server/vps

1. install webtatic repo:

rpm -ivh http://repo.webtatic.com/yum/centos/5/`uname -i`/webtatic-release-5-1.noarch.rpm

2. install/upgrade php 5.3.x

yum --enablerepo=webtatic install php
yum --enablerepo=webtatic upgrade php

3. install/upgrade php 5.2.x


yum --enablerepo=webtatic --exclude=php*5.3* update php
yum --enablerepo=webtatic --exclude=php*5.3* install php