Side by Side Installations

It is possible to install multiple versions of CORE side by side on the same server. One snag you may run into is that both Office and Lane make use on PHP sessions to cache information about where classes are loaded. All pages viewed on the same host using the same browser (including separate windows and tabs) will share the same session. Thus if you're going back and forth between two separate versions of CORE on the same server using the same browser the two versions may end up loading one another's code.

You can, of course, close and re-open the browser before looking at each version although that's extra work to keep track of. Alternately, you can leave both installs on the same server but access them via different hosts. Options include:

• Virtual NICs. If your server has two IPs you can browse each installation via a separate IP.
• Give the server more than one name. If no one else needs to access both installations this can simply be done in your computer's hosts file. Otherwise changes would have to happen at the local DNS server.