Install multiple WordPress installations to single domain
Create multiple sites With a technique called Virtual Multi-Blog
WordPress holds all of its data in a MySQL database and there is a single file called wp-config.php that holds the database login information. If you can change that one file, you can completely replace the blog. With this key realization you can come up with a straightforward multi-blog system:
- Replace the standard wp-config.php file with a new version that calls a different configuration set depending on what directory it’s in.
- Set up symbolic links that serve as “virtual directories” that all point to the WordPress directory.
I personally have tried the standalone WordPress MU system several years ago, but not the newer multisite integrated into the new WordPress 3.x and above installs. I have tried the single WordPress install, multiple WordPress installs, but not the Virtual Multi-blog technique.
For more information regarding this Virtual Multi-Blog technique visit the official Virtual Multi-blog for WordPress page at: http://striderweb.com/nerdaphernalia/features/virtual-multiblog/