src/BlakeGardner/MacAddress.php
public static function getCurrentMacAddress($interface)
    {
        $ifconfig = self::runCommand("ifconfig {$interface}");
        preg_match("/" . self::$valid_mac . "/i", $ifconfig, $ifconfig);
        if (isset($ifconfig[0])) {
            return trim(strtoupper($ifconfig[0]));
        }
        return false;
    }
public static function getCurrentMacAddress($interface)
    {
        $ifconfig = self::runCommand("ifconfig {$interface}");
        preg_match("/" . self::$valid_mac . "/i", $ifconfig, $ifconfig);
        if (isset($ifconfig[0])) {
            return trim(strtoupper($ifconfig[0]));
        }
        return false;
    }
Get the system's current MAC address
@param string $interface The name of the interface e.g. eth0
@return string|bool Systems current MAC address; otherwise false on error