I have a project in mind that effectively means making the same core php scripts available to a range of clients, by placing the scripts under var/www/coredcode/ and using alias in the vhost.conf file to configure my clients' domains to use those rather than local files. Advantage to me is that I only ever have to maintain and upgrade one set of files :-)

What I'm not sure about is if this will impact on the server load. If, for example, I run 15 domains in this way, so each domain is accessing the same index.php file located at var/www/corecode/index.php, is this more demanding of the server than running 15 separate instances of index.php under the 15 different domains? Or will it make little to no difference?

Adam

well there's no implicit impact on resources, why should there be? If this one shared page is significantly more complex in order to provide functionality then it might have an impact, but it should be fine if you're a good php coder.

That was my assumption, but I'm more up on the php than the server implications so it seemed worth asking in case I had missed something :-) There will obviously be some extra work involved in determining the domain the script is running under, but it only need be performed once on log-in so the implications should be negligable. Thanks for the feedback

Adam