[root@db01 ~]# cat /etc/yum.repos.d/centos.21andy.com.repo    #备注：添加如下：

[utterramblings]  
name=Jason's Utter Ramblings Repo  
baseurl=http://www.jasonlitka.com/media/EL$releasever/$basearch/  
enabled=1  
gpgcheck=1  
gpgkey=http://www.jasonlitka.com/media/RPM-GPG-KEY-jlitka
 
然后：
[root@db01 ~]# yum update php
[root@db01 ~]# php -v
PHP 5.2.17 (cli) (built: Sep  1 2011 17:22:41) 
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies