I don't know what the meaning of "web page interface". I want to control my servo when I click the button on my PHP web. But I don't know how to connect PHP web server to arduino uno to command my servo.
What is a "PHP web", a new cell phone? If you have a pc running a web server and PHP, then it seems people usually have the PHP application write a serial command, based on the data sent to the web server, to the connected arduino. A forum search for PHP should provide a lot of previous discussions on similar subjects.