anchor.diff:  new image containing your PHP application. This resulting image can be run
   either by OpenShift or by Docker.
   
  +[[php-versions]]
   == Versions
  +
   Currently, OpenShift provides version
   https://github.com/openshift/sti-php/tree/master/5.5[5.5] of PHP.
   
  +[[php-images]]
   == Images
   
   This image comes in two flavors, depending on your needs:
  
positive.code: rsh`] command to access the container.
  
  [[php-hot-deploy]]
  
  == Hot Deploying
  Hot deployment allows you to quickly make and deploy changes to your application without having to
  generate a new S2I build. In order to immediately pick up changes made in your application source
  code, you need to run your built image with the `OPCACHE_REVALIDATE_FREQ=0` environment variable.
  For example, see the link:../../dev_guide/new_app.html#specifying-environment-variables[`oc new-app`]
  command. You can use the link:../../dev_guide/environment_variables.html#set-environment-variables[`oc env`]
  command to update environment variables of existing objects.
  
  [WARNING]
  ====
  
negative.code: |Variable name |Description |Default
  
  |`*OPCACHE_MEMORY_CONSUMPTION*`
  |The link:http://php.net/manual/en/book.opcache.php[OPcache] shared memory
  storage size.
  |*16M*
  
  |`*OPCACHE_REVALIDATE_FREQ*`
  |How often to check script time stamps for updates, in seconds. *0* results in
  link:http://php.net/manual/en/book.opcache.php[OPcache] checking for updates on
  every request.
  |*2*
  |===
  
  You can also override the entire directory used to load the PHP configuration by setting:
  