Another SYSTEM Function Question

I have another question regarding running a system command on a web server. Let me explain again, I am creating a login page that is to be used on my local lan only. I am wanting to lock down a maximum number of logins to up to 2 MAC addresses. I finally got the arp command working, but now I have another issue with new lines. The command I am running is system("arp " . $_SERVER['REMOTE_ADDR'] . " | grep " . $_SERVER['REMOTE_ADDR'] . " | cut -b34-50"); The command runs correctly, however the output is directly and not by using echo. I would like to be able to assign what is returned to a variable so that I can do additional work on it. Any ideas? -- Nathaniel Hall, GSEC GCFW GCIA GCIH GCFA