We are following this article, but have come across our first stumbling block.
Our $DOCUMENT_HOME is /xx/xxx/public_html, the root for our web site.
So within this directory we created a directory /ref, this gives us the URL structure
www.modzik.com/ref/article/product
which we will use as our structure for our variable list provided in the URLs, but having created a directory ref in the $DOCUMENT_HOME we can't create a file called ref
Are we doing something wrong?