[CentOS] Switching to php53

I have a Centos 5.6 server which is using the default php packages.
These currently contain PHP 5.1.6.

My main use of PHP on the server is to support an installation of
WordPress. I currently had WP 3.1.2 installed, but the WP developers
have announced that from WP 3.2 they will only support PHP 5. and
greater.

So I investigated and found that the Centos repo contains a series of
php53 packages. I tried to install php53 using yum but got the
following error:

  Resolving Dependencies
  --> Running transaction check
  ---> Package php53.x86_64 0:5.3.3-1.el5_6.1 set to be updated
  --> Processing Dependency: php53-cli = 5.3.3-1.el5_6.1 for package: php53
  --> Processing Dependency: php53-common = 5.3.3-1.el5_6.1 for package: php53
  --> Running transaction check
  ---> Package php53-cli.x86_64 0:5.3.3-1.el5_6.1 set to be updated
  ---> Package php53-common.x86_64 0:5.3.3-1.el5_6.1 set to be updated
  --> Processing Conflict: php53-common conflicts php-common
  --> Finished Dependency Resolution
  php53-common-5.3.3-1.el5_6.1.x86_64 from updates has depsolving problems
    --> php53-common conflicts with php-common
  Error: php53-common conflicts with php-common
   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

I would have thought that the new php53-common package would have
obsoleted php-common rather than conflicting with it.

Is there a clean way to replace php with php53? Or should I just wait
and hope that Centos 6 is released before WP 3.2 :)

Thanks,

Dave...

-- 
Dave Cross :: dave at dave.org.uk
http://dave.org.uk/
@davorg