Mac address with arp -a

Hi all,
I am using freeBSD .
I have written a PHP script that can give me IP , hostname as well as MAc address of the work station.
I have used
And than used the perg_match(PHP function ) to get MAC address.
That works fine on my PC. But when i run that script on other PCS , It gives me correct IP and hostname , but the arp -a gives me all the data of my Pc , rather than giving me the result of the PC on which I am running the script..

are there any other option , by which i can get MAC address ....
Thanks,

if you run ifconfig <network device>, you can also retrieve the mac-address (HWaddr)

Hope this works

Hey micmast,
Thanks for the help..
I tried doing ifconfig also , but it dint give me HWaddr .
Actually my script work well on my PC and give me hostname , ip and MAC correct
But when i run that on other PC in the work group , it shows correct IP and host of their PC and gives me results of "arp -a " of my PC( my detail rather than their)
DO you have any idea ?
Thanks,

arp -a doens't return my mac either, it returns the mac of my default router. what info do you get from ifconfig <interface> ?

offcourse I'm testing this on a linux system, not bsd, but it shouldn't look all that different