i'm trying to upgrade php 5.1 to 5.2 on a CentOS 5.4

I use:

yum upgrade php

The result is this (check out the last part):

[root@mail httpd]# yum update php
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * addons: mirror.raystedman.net
 * base: mirrors.serveraxis.net
 * centosplus: mirrors.tummy.com
 * contrib: mirror.raystedman.net
 * extras: mirror.raystedman.net
 * updates: mirrors.netdna.com
Setting up Update Process
Resolving Dependencies
--> Running transaction check
--> Processing Dependency: php = 5.1.6-27.el5 for package: php-devel
--> Processing Dependency: php = 5.1.6 for package: php-eaccelerator
---> Package php.x86_64 0:5.2.10-1.el5.centos set to be updated
--> Processing Dependency: php-cli = 5.2.10-1.el5.centos for package: php
--> Processing Dependency: php-common = 5.2.10-1.el5.centos for package: php
--> Running transaction check
--> Processing Dependency: php = 5.1.6 for package: php-eaccelerator
---> Package php-cli.x86_64 0:5.2.10-1.el5.centos set to be updated
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-xml
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-pdo
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-gd
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-ldap
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-mbstring
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-mysql
--> Processing Dependency: php-common = 5.1.6-27.el5 for package: php-imap
---> Package php-common.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-devel.x86_64 0:5.2.10-1.el5.centos set to be updated
--> Running transaction check
--> Processing Dependency: php = 5.1.6 for package: php-eaccelerator
---> Package php-gd.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-imap.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-ldap.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-mbstring.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-mysql.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-pdo.x86_64 0:5.2.10-1.el5.centos set to be updated
---> Package php-xml.x86_64 0:5.2.10-1.el5.centos set to be updated
--> Finished Dependency Resolution
php-eaccelerator-5.1.6_0.9.5.2-4.el5.rf.x86_64 from installed has depsolving problems
  --> Missing Dependency: php = 5.1.6 is needed by package php-eaccelerator-5.1.6_0.9.5.2-4.el5.rf.x86_64 (installed)
Error: Missing Dependency: php = 5.1.6 is needed by package php-eaccelerator-5.1.6_0.9.5.2-4.el5.rf.x86_64 (installed)
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
                        package-cleanup --dupes
                        rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.
[root@mail httpd]# 

What are the consequences of using --skip-broken? Any recommendations?