Did you install the free Server Behaviors and Database extension from the Adobe Store?
MySQLi Server Behaviors are available from the Server Behaviors window with a .php page open that is saved to a configured site in Dreamweaver.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.