My customer has a site, which has WP blog + vBulletin forum. Now he wants to allow vb users to have their own blog, by modifying current WP blog to WPMU network.
So I want to create a button, which could be clicked by vb user and new site will be created in network for him. How can I create new site programmatically for WPMU network?
first create a user from this function
then used this function to create blog
for detail you can see this file
after viewing this page you will have the exact idea what you want to do.