How to use PHP to get the computer name and Mac address based on the IP address and check whether the computer with the IP is online?

Question

电动小老虎 · Answer

First of all, PHP is a server-side scripting language and can only run on the server, which determines that it cannot traverse customer data.

Secondly, according to the http protocol. The client sends a request, and the server responds after receiving it. It cannot actively access the client.

Again, the websoket protocol allows the establishment of a connection with the remote server through JS, allowing two-way communication. It should be possible. .