How can I get the MAC and the IP address of a connected client in PHP?

Question

I need to know the MAC and the IP address of the connect clients, how can I do this in PHP?

Answer 1

You can do this easily using openWRT. If yo use a captive portal you can mix php and openWRT and make a relation between the IP and the mac.

You can write a simple PHP code using:

 $localIP = getHostByName(getHostName()); 

Later, using openWRT you can go to /tmp/dhcp.leases, you will get something with the form:

 e4:a7:a0:29:xx:xx 10.239.3.XXX DESKTOP-XXX 

There, you have the mac, the IP address and the hostname.