title: Can't install php-xml for PHP7 (CentOS)
body: <p>I have installed PHP7, and I want to install php-xml, but it won't let me because I still have conflicting traces of PHP 5.4 on my system, that I cannot get rid of.</p>
  
  <p>Here is what it looks like when I try to run "yum install php-xml": </p>
  
  
  
      <code>
      $ sudo yum install php-xml
      Loaded plugins: fastestmirror, langpacks, replace
      Loading mirror speeds from cached hostfile
       * base: mirror.fileplanet.com
       * epel: mirror.sjc02.svwh.net
       * extras: mirror.fileplanet.com
       * ius: mirrors.kernel.org
       * remi-safe: mirrors.mediatemple.net
       * rpmfusion-free-updates: mirror.math.princeton.edu
       * rpmfusion-nonfree-updates: mirror.math.princeton.edu
       * updates: mirror.fileplanet.com
       * webtatic: us-east.repo.webtatic.com
      Resolving Dependencies
      --> Running transaction check
      ---> Package php-xml.x86_64 0:5.4.16-42.el7 will be installed
      --> Processing Dependency: php-common(x86-64) = 5.4.16-42.el7 for package: php-xml-5.4.16-42.el7.x86_64
      --> Running transaction check
      ---> Package php-common.x86_64 0:5.4.16-42.el7 will be installed
      --> Processing Conflict: php70w-common-7.0.19-1.w7.x86_64 conflicts php-common  Finished Dependency Resolution
      Error: php70w-common conflicts with php-common-5.4.16-42.el7.x86_64
       You could try using --skip-broken to work around the problem
       You could try running: rpm -Va --nofiles --nodigest
      </code> 
  
  
  
  <p><br></p>
  
  <p>I've even tried to remove the php-common and I just get: </p>
  
  
  
      <code>
      $ sudo yum remove php-common-5.4.16-42.el7.x86_64
      Loaded plugins: fastestmirror, langpacks, replace
      No Match for argument: php-common-5.4.16-42.el7.x86_64
      No Packages marked for removal
      </code>
  
  
  
  <p><br> 
  So it conflicts with php-common-5.4.16-42.el7.x86_64, yet php-common-5.4.16-42.el7.x86_64 doens't exist. <br>
  Any help is greatly appreciated. <br>
  Also, I noticed it says </p>
  
  <pre><code>&lt;code&gt;
  Package php-xml.x86_64 0:5.4.16-42.el7 will be installed
  &lt;/code&gt;
  </code></pre>
  
  <p>But I don't want it for php 5.4, I want it for PHP7. </p>