PHPoC itself has a webserver to provide a web interface. Webserver is independent of PHPoC main script. TCP 80 is used for web server and you can use the interface via web browsers.
To use the web interface, "index.php" file should be in the file system of P4M-440G. Connect to this page by entering device IP address after connecting it to network.
If the name of file is not "index.php", just specify the name of file after the IP address with slash mark.
When PHPoC operates as a web server, it executes PHP code embedded in web pages. Therefore, users can insert code for interacting with various interfaces and data within the web page. WebSocket, in particular, allows for real-time exchange of such data.