[CentOS] Centos 7 and php 5.5

I am hoping that the wisdom of the group here can at least point me in 
the right direction.

I have a Centos7 server that I need to upgrade php from 5.4 to 5.5. I've 
tried several tutorials to add the remi repository and enable php55, but 
I always end up at the same result:

Error: Package: php-5.5.38-1.el6.remi.x86_64 (remi-php55)
            Requires: httpd-mmn = 20051115
            Installed: httpd-2.4.6-40.el7.centos.4.x86_64 (@updates)
                httpd-mmn = 20120211
                httpd-mmn = 20120211x8664
                httpd-mmn = 20120211-x86-64
            Available: httpd-2.4.6-40.el7.centos.x86_64 (base)
                httpd-mmn = 20120211x8664
                httpd-mmn = 20120211-x86-64
                httpd-mmn = 20120211
            Available: httpd-2.4.6-40.el7.centos.1.x86_64 (updates)
                httpd-mmn = 20120211x8664
                httpd-mmn = 20120211-x86-64
                httpd-mmn = 20120211
Error: Package: php-pecl-jsonc-1.3.10-1.el7.remi.5.4.x86_64 (remi)
            Requires: php(api) = 20100412-64
            Removing: php-common-5.4.45-11.el7.remi.x86_64 (@remi)
                php(api) = 20100412-64
            Updated By: php-common-5.5.38-1.el6.remi.x86_64 (remi-php55)
                php(api) = 20121113-64
            Available: php-common-5.4.16-36.el7_1.x86_64 (base)
                php(api) = 20100412-64
            Available: php-common-5.4.16-36.1.el7_2.1.x86_64 (updates)
                php(api) = 20100412-64
            Available: php-common-5.4.16-36.3.el7_2.x86_64 (updates)
                php(api) = 20100412-64
            Available: php-common-5.4.45-10.el7.remi.x86_64 (remi)
                php(api) = 20100412-64
            Available: php-common-5.5.37-1.el6.remi.x86_64 (remi-php55)
                php(api) = 20121113-64
Error: Package: php-pecl-jsonc-1.3.10-1.el7.remi.5.4.x86_64 (remi)
            Requires: php(zend-abi) = 20100525-64
            Removing: php-common-5.4.45-11.el7.remi.x86_64 (@remi)
                php(zend-abi) = 20100525-64
            Updated By: php-common-5.5.38-1.el6.remi.x86_64 (remi-php55)
                php(zend-abi) = 20121212-64
            Available: php-common-5.4.16-36.el7_1.x86_64 (base)
                php(zend-abi) = 20100525-64
            Available: php-common-5.4.16-36.1.el7_2.1.x86_64 (updates)
                php(zend-abi) = 20100525-64
            Available: php-common-5.4.16-36.3.el7_2.x86_64 (updates)
                php(zend-abi) = 20100525-64
            Available: php-common-5.4.45-10.el7.remi.x86_64 (remi)
                php(zend-abi) = 20100525-64
            Available: php-common-5.5.37-1.el6.remi.x86_64 (remi-php55)
                php(zend-abi) = 20121212-64
  You could try using --skip-broken to work around the problem
  You could try running: rpm -Va --nofiles --nodigest


If I try --skip-broken, I get:


Packages skipped because of dependency problems:
     gd-last-2.2.3-1.el7.remi.x86_64 from remi
     libpng12-1.2.50-7.el7_2.x86_64 from updates
     libzip-last-1.1.3-1.el7.remi.x86_64 from remi
     php-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-cli-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-common-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-gd-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-mbstring-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-mcrypt-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-mysqlnd-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-pdo-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-pecl-jsonc-1.3.10-1.el7.remi.5.4.x86_64 from remi
     php-pecl-zip-1.13.4-1.el6.remi.5.5.x86_64 from remi-php55
     php-process-5.5.38-1.el6.remi.x86_64 from remi-php55
     php-xml-5.5.38-1.el6.remi.x86_64 from remi-php55
Error:  Multilib version problems found. This often means that the root
        cause is something else and multilib version checking is just
        pointing out that there is a problem. Eg.:

          1. You have an upgrade for php-common which is missing some
             dependency that another package requires. Yum is trying to
             solve this by installing an older version of php-common of the
             different architecture. If you exclude the bad architecture
             yum will tell you what the root cause is (which package
             requires what). You can try redoing the upgrade with
             --exclude php-common.otherarch ... this should give you an 
error
             message showing the root cause of the problem.

          2. You have multiple architectures of php-common installed, but
             yum can only see an upgrade for one of those architectures.
             If you don't want/need both architectures anymore then you
             can remove the one with the missing update and everything
             will work.

          3. You have duplicate versions of php-common installed already.
             You can use "yum check" to get yum show these errors.

        ...you can also use --setopt=protected_multilib=false to remove
        this checking, however this is almost never the correct thing to
        do as something else is very likely to go wrong (often causing
        much more problems).

        Protected multilib versions: php-common-5.5.37-1.el6.remi.x86_64 
!= php-common-5.4.45-11.el7.remi.x86_64