header("Content-type: image/gif"); 
$im = imagecreate(130,15); 
$background_color = ImageColorAllocate ($im, 255, 255, 255); 
unset($ip); 
if($_SERVER['HTTP_CLIENT_IP']){ 
$ip=$_SERVER['HTTP_CLIENT_IP']; 
} else if($_SERVER['HTTP_X_FORWARDED_FOR']){ 
$ip=$_SERVER['HTTP_X_FORWARDED_FOR']; 
} else{ 
$ip=$_SERVER['REMOTE_ADDR']; 
} 
$col = imagecolorallocate($im, 0, 51, 102); 
imagestring($im, 3, 5, 1, $ip , $col); 
imagegif($im); 
imagedestroy($im);