MAC Address Resolution

Getting a MAC address in PHP

[Kronos]

Hello again,

I'm looking for a way to find someone's MAC address using PHP code on my web site. It's for statiscal use and I must differentiate the users. Thanks!

[Gibble]

Trust me, this is a PITA and will NEVER work reliably. Unless you have the user download and install a control that gets the MAC from the client side, you will never get this to work properly.

We tried doing it internally and got hung up because of different segments, so ... good luck!

[vincevincevince]

2 ways:
1 - send ARP REQUEST to the IP
2 - send PING to the IP

So far as implementing these in php I can't help you - but the packet makeup is standard for both... hope it at least helps your search!

For differentiating users, use cookies and IP address?

[Knowles]

Could you put it into passthru [us3.php.net]? I am not sure how you could read the response but that should send the ping at least.