PHP實現獲取本地,远程IP，MAC

<?php
@exec("ipconfig /all",$array);
for($Tmpa;$Tmpa<(count($array))/2;$Tmpa++){
      if(eregi("Physical",$array[$Tmpa])){
            $mac=explode(":",$array[$Tmpa]);
            echo $mac[1];
      }
     
       if(eregi("IP Address.",$array[$Tmpa])){
            $ip=explode(":",$array[$Tmpa]);
            echo $ip[1];
      }
     
}

$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];

echo $user_IP;
?>

<?php
function GetMacAddr()
{
    $return_array = array();
    $temp_array = array();
    $mac_addr = "";
   
    @exec("arp -a",$return_array);
   
    foreach($return_array as $value)
    {
        if(strpos($value,$_SERVER["REMOTE_ADDR"]) !== false &&
        preg_match("/(:?[0-9a-f]{2}[:-]){5}[0-9a-f]{2}/i",$value,$temp_array))
        {
            $mac_addr = $temp_array[0];
            break;
        }
    }
   
    return ($mac_addr);
}

echo GetMacAddr();
?>