Script showing your I.P.

<?php
$img_number = imagecreate(275,25);
$backcolor = imagecolorallocate($img_number,102,102,153);
$textcolor = imagecolorallocate($img_number,255,255,255);
imagefill($img_number,0,0,$backcolor);
$number = " Your IP is $_SERVER[REMOTE_ADDR]";
Imagestring($img_number,10,5,5,$number,$textcolor);
header("Content-type: image/jpeg");
imagejpeg($img_number);
?>

OR

<?
$remote_address = getenv("REMOTE_ADDR");
echo "Your IP address is $remote_address.";
$browser_type = getenv("HTTP_USER_AGENT");
echo "You are using $browser_type.";
?>

OR
 
<?php
//Gets the IP address
$ip = getenv("REMOTE_ADDR") ;
Echo "Your IP is " . $ip;
?>

Save it as any name.php upload it and u will see ur ip address.
Note it will not steal ip addres it will just show ur ip addres just like showmyip.com.